Battery with particle protection and vehicle equipped with same

Abstract

The present invention relates to a battery (1) and a vehicle equipped with the battery. The battery (1) has a battery housing (2) that defines a plurality of separate storage compartments (4) by housing walls and load-bearing struts (3) extending between the housing walls. Each of these storage compartments (4) contains a plurality of cell modules (5). A non-load-bearing protective plate (11) is disposed between two adjacent cell modules (5) in one storage compartment (4) to regionally prevent the propagation of cell ejection (12) from one of the adjacent cell modules (5) to the other. The protective plate (11) is separate from the battery housing (2) and the structure of the storage compartment (4).

Description

[Technical Field]

[0001] The present invention relates to a battery that can be implemented in particular as a traction battery for a motor vehicle, and further to a motor vehicle equipped with such a battery. [Background technology]

[0002] Batteries are now used in many different technical fields and applications. Such fields and applications place increasing demands on batteries, particularly with regard to the highest possible energy density and capacity, as well as relatively high charge / discharge performance, making the operational safety of batteries an important factor in their design and construction. For example, while much effort is expended to ensure the safety of conventional batteries, such as high-voltage traction batteries in automobiles, in the event of an accident or fire, this can have the disadvantage of correspondingly increasing costs and potentially resulting in increased installation space and weight.

[0003] In particular, a defect in a battery cell can cause heat propagation and subsequent thermal runaway of multiple battery cells. Correspondingly, hot gases and conductive particles can be emitted from the thermally runaway battery cell, which can lead to the breakdown or bypass of the insulating air gaps or creepage distances at key locations within the battery. Therefore, today's high-voltage batteries are equipped with robust fire walls or fire struts to improve safety. However, these have the disadvantage of reducing the overall battery energy density and potentially increasing the battery's weight undesirably. For this reason, it is common for each battery cell or each cell module containing multiple battery cells to not be completely and properly encapsulated. However, if one or more battery cells within a cell module experience thermal runaway, this can cause conductive particles to fly unimpeded to adjacent cell modules and deposit there, potentially compromising the air gaps and creepage distances there, at least over a period of time. Depending on the voltage level, this can lead to, for example, arcing or short circuits that can further exacerbate propagation behavior within the battery.

[0004] For this reason, for example, Patent Document 1 describes a thermal management system for a battery pack. The system includes a multi-sided, airtight battery pack housing that houses multiple batteries. The side of the battery pack housing includes a cavity, and the inner housing wall has multiple through-holes that allow gas from the interior of the battery pack housing to pass into the cavity. Furthermore, the outer wall of the battery pack housing has an integrated gas outlet opening, which allows gas exchange with the cavity. This gas outlet opening is sealed by a cap assembly equipped with a check valve. However, even in this configuration, the interior of the battery pack can be divided into multiple sections by cross struts (reinforcement bars), which can prevent the transfer of thermal energy from one section to the next. However, each section may contain multiple cell modules.

[0005] As another approach to suppressing damage caused by thermal runaway of battery cells, Patent Document 2 describes a battery including a battery housing and multiple battery cells arranged therein. Each of these battery cells has an electrical contact and a gas vent on one side. In this case, an electrically insulating flat protective member is arranged between the battery cells and the outer wall of the battery housing facing the gas vent, thereby covering the gas vent and the electrical contact. This protective member is formed to be heat resistant over most of its surface, and the gas vent has a design failure point that can be broken through by materials leaking from each battery cell in the event of a thermal failure. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] European Patent Application Publication No. 2506336 [Patent Document 2] German Patent Application Publication No. 102020128756 Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the present invention is to provide a battery that is safe and does not require wasted assembly space. [Means for solving the problem]

[0008] This problem is solved by the subject matter of the independent patent claims. Further possible embodiments of the invention are disclosed in the dependent claims, the description and the drawings. Features, advantages and possible embodiments stated in the description for one of the subject matters of an independent claim can equally be regarded as features, advantages and possible embodiments of each of the subject matters of the other independent claims and as possible combinations of the subject matter of the independent claim, if necessary in combination with one or more other dependent claims.

[0009] The battery according to the invention may in particular be implemented as a traction battery for a motor vehicle. Likewise, the battery according to the invention may also be, for example, a buffer or stabilizer battery for a household battery or a power grid. The battery according to the invention comprises a battery housing in which a plurality of separate storage compartments are formed by its housing walls (i.e., for example, the housing bottom, the housing cover, and the outer or side wall of the battery housing) and by load-bearing struts extending from one housing wall of the battery housing to the opposite housing wall of the battery housing. For this purpose, the struts in particular extend parallel to one another.

[0010] The struts may be structural or reinforcing elements implemented as, for example, cross struts or firewalls.

[0011] That is, the battery housing here can have storage compartments or compact elements that are at least substantially separated from one another or sealed off from one another. Only through-holes for, for example, cable wiring and / or cooling medium pipes may be provided between them. As a result, the load-bearing struts can thus impede or prevent ejections, such as heated gases and / or particles, from a battery cell arranged in one storage compartment from propagating to or reaching a battery cell arranged in an adjacent storage compartment. At the same time, the struts can be configured and arranged to absorb or deflect external mechanical loads acting on the battery housing, for example, in the event of a corresponding vehicle accident.

[0012] In the battery according to the invention, several or all of the storage compartments are each provided with a plurality of cell modules, in particular at least two or exactly two. These cell modules may each have a plurality of individual battery cells electrically connected to one another. In addition, the cell modules may each have a separate module housing for accommodating each battery cell.

[0013] According to the invention, non-load-bearing protective plates are respectively arranged between two adjacent cell modules arranged in one of the storage compartments, in particular as seen in the main deployment plane of the struts, i.e., these protective plates may be respectively arranged between the facing side walls of adjacent cell modules or corresponding module housings arranged in the storage compartment, each protective plate being arranged and implemented here in order to regionally prevent the propagation of cell ejection, in particular the propagation of heated and / or conductive particles, to the other adjacent cell module in the event of a thermal runaway of a battery cell of one of the two adjacent cell modules.

[0014] Therefore, one or more guard plates of a battery according to the invention may be made of a heat-resistant material, for example, such a guard plate may be designed to withstand temperature loads of several hundred degrees Celsius or even more than 1000 degrees Celsius, or exposure to correspondingly heated particles from a thermally runaway battery cell for several minutes.

[0015] Regional impediment to such cell ejections may here in particular mean that each protection plate does not completely or completely isolate two adjacent cell modules from each other, i.e. the protection plate does not divide the storage compartment into two storage compartments, and therefore each protection plate is according to the invention separate from both the battery housing and the structure of the storage compartment, in particular the load-bearing struts.

[0016] That is, the at least one protection plate provided in the battery according to the invention is not implemented as a structural support or structural component of the battery or battery housing, i.e., is not implemented as a mechanically stabilizing component. Similarly, each protection plate is not part of the grid structure of the battery housing formed by the housing walls and struts. In particular, each protection plate is not designed, implemented, or arranged to receive or deflect mechanical loads or forces acting from outside the battery housing, i.e., may not be integrated with, for example, load-bearing struts.

[0017] The proposed embodiment of the protection plate according to the invention allows it to be implemented in a particularly compact, lightweight and space-saving manner, while at the same time optimizing its function as a barrier to cell ejections. In addition, the protection plate can be positioned precisely, i.e. particularly accurately, here, i.e., in such a way that it optimally blocks cell ejections (for example, between adjacent cell modules, in the path along which such cell ejections are most likely to propagate) and / or covers (especially only) components that are particularly susceptible to damage or that could lead to short circuits. This is possible here in a particularly simple, selective and detailed manner, and therefore at the same time effective and space-saving, i.e., overall particularly efficient. This is because the protective plates do not have to be mounted so as to simultaneously bear loads, i.e., so as to be mechanically stable. This allows the protective plates to be arranged flexibly or made to suit, for example, the arrangement or contours of other components. This means that the protective plates can further comprise bent sections and / or recesses and / or areas of reduced material thickness. In this way, the protective plates can either follow the contours of the surrounding components or at least fully utilize the irregularly shaped free space between each two adjacent cell modules. This means that the protective plates can be arranged while effectively and completely utilizing any cavities or gaps that may exist between adjacent cell modules and / or the battery components arranged therein, if necessary.

[0018] As a result, the present invention makes it possible to more easily prevent damage caused by thermal runaway of the battery cells of the battery or effectively improve safety, while not increasing the weight of the entire battery and the required installation space, or only increasing it to a minimum extent. Thus, by using the protection plate, it is possible to adjust, as needed, for example, the design of the air gap or creepage distance and / or electrical and / or thermal insulation. or The safety margin is This can be reduced by protecting the components with a protective plate.

[0019] The term guard plate here is to be understood as a rough indication of the possible shape of a suitable component, i.e., according to the invention the guard plate does not have to be strictly plate-shaped.

[0020] In one possible embodiment of the invention, each protection plate is arranged or aligned so that its main direction of extension or main plane of deployment is perpendicular to the main direction of extension of the adjacent strut, i.e., the strut that laterally defines each storage compartment. This allows the use of a combination of struts and protection plates to achieve a particularly simple and particularly space-saving battery design that is stable, strong, and safe, while at the same time not wasting installation space. This is especially true in comparison with, for example, a construction constructed from intersecting struts in which only a single cell module is arranged in each of the storage compartments surrounded by the struts. Thus, the struts here may be, for example, transverse struts relative to the entire battery or battery housing, while one or more protection plates may then be arranged longitudinally.

[0021] In yet another possible embodiment of the present invention, each protective plate is made of steel sheet or mica material. Such mica material may be pure mica or mica, i.e., a mineral material of the mica group, or the like. The proposed embodiment of the protective plate provides a particularly good protective effect while simultaneously requiring a particularly small amount of installation space, i.e., a corresponding reduction in the weight of the protective plate, for example by a particularly small material thickness. This results in a particularly efficient improvement or realization of the safety and robustness of the battery.

[0022] In yet another possible embodiment of the invention, each protection plate is spaced apart at least in or along its main extension direction from the adjacent struts, i.e., the struts that laterally define each storage compartment. This means that, when viewed in or along the main extension direction of the protection plate, there may be a gap or a gap between each strut and the side edge of the protection plate facing it. In other words, the protection plate may not reach the struts and / or housing walls that define each storage compartment over the entire periphery or at least in its main extension direction. As a result, the protection plate can leave open, for example, deformation spaces or connections to deformation spaces in the battery housing.

[0023] Such deformation space can provide a deformation space, i.e., a space for deforming the outer housing wall of the battery housing, to prevent a corresponding force from being applied to the cell module when an external mechanical force or load acts on the battery housing.

[0024] Similarly, the gaps provided here between the protective plates and the struts and / or housing walls correspondingly increase the volume of the associated spaces, thereby reducing the pressure buildup in the area of ​​each cell module where a battery cell is experiencing thermal runaway, compared to, for example, a completely sealed, individual encapsulation of all cell modules. This can also help to reduce damage caused by thermal runaway of a battery cell. At the same time, the proposed gaps are negligible from a safety standpoint, since the probability that a cell ejection will escape and ultimately reach each of the adjacent cell modules or their electrical components or other critical points that are relevant to safety in this regard may be relatively small compared to, for example, the probability that a cell ejection will be trapped or captured by the protective plates.

[0025] Furthermore, the proposed lateral spacing of the protective plates makes it particularly easy to insert the protective plates and / or cell modules into the storage compartment or battery housing, thereby making it particularly easy to manufacture or final assemble the battery. Furthermore, the proposed spacing reliably prevents or minimizes direct forces on the protective plates when external mechanical loads act on the battery housing. This reduces the risk of the protective plates being damaged or displaced in such cases. This also allows the protective plates to perform their heat and material protection with particularly high reliability and certainty even when subjected to such loads.

[0026] In yet another possible embodiment of the invention, each protective plate, in its main expansion surface, i.e., in the direction or dimension along which this main expansion surface extends, is at most equal in size to, and in particular smaller than, the side walls of the two adjacent cell modules or module housings of these cell modules facing the protective plate. In other words, the protective plate does not protrude beyond the cell modules in the direction of its main expansion surface. This allows the protective effect of the protective plate to be achieved without increasing the installation space of the battery in the direction along which the main expansion surface of the protective plate extends, and without interfering with, for example, the connection of the cell modules and / or the introduction and routing of cables or cooling medium pipes within the battery or in the respective storage compartments. The protective plate proposed according to the invention can thus be integrated into existing battery designs particularly easily and efficiently, while saving installation space.

[0027] In yet another possible embodiment of the invention, each protective plate is fastened to a steel joint by a snap connection (also known as a clip connection). Such a snap connection allows for particularly easy fastening of the protective plate by elastic deformation of the joint and latching in or with a corresponding mating part. Such a snap connection allows for particularly easy manufacturing or final assembly of the battery, compared to, for example, screwing or welding the protective plate. The steel embodiment of the deformable joint of the snap connection then ensures particularly high temperature stability of the snap connection. This means that the snap connection can hold the protective plate in its installed position even in the event of a thermal failure of one of the battery cells of an adjacent cell module. This can be understood in comparison to protective plates fastened primarily with plastic.

[0028] In yet another possible embodiment of the present invention, adjacent cell modules each have a plurality of battery cells and end-side retaining plates that sandwich them. Here, the protective plates are fixed externally, i.e., the outer surface of the retaining plate of only one of the two cell modules is fixed against or rests on the outer surface of the retaining plate facing the respective other cell module, facing away from the battery cells of the respective cell module, in other words, the outer surface facing the respective other cell module. Since such retaining plates must be designed to be sufficiently sturdy in order to fulfill their primary role of stably clamping the battery cells, they can also serve as a suitable means for stably holding and fixing the protective plates without further optimization. As a result, the protective plates can be fixed particularly reliably and with little effort, i.e., without additional holding structures, etc. Furthermore, the protective plates can be fixed or positioned in a particularly space-saving manner. This is because, for example, no tolerances need to be observed for the individual insertion of the cell modules and the protective plate into the battery housing or into the respective storage compartments. In particular, by fastening the protective plate to one of the cell modules, the corresponding unit consisting of the cell module and the protective plate can be manufactured separately, i.e., outside the battery, and can then be particularly easily handled, i.e., inserted into the respective storage compartments (in particular independently of the respective counterparts of two adjacent cell modules), during the manufacture or final assembly of the battery.

[0029] In yet another possible embodiment of the invention, each protection plate is fixed to at least one cooling pipe connector of one of two adjacent cell modules and / or to at least one cooling medium pipe of the cell module cooling means. Such a cell module cooling means may here be a cooling device or system that cools one or both of the adjacent cell modules during operation of the respective battery. The proposed fixing of the protection plates makes it possible to avoid compromising the integrity of the cell modules, since, for example, fixing the protection plates does not require the placement of fixing holes, screws, etc. in the outer wall of the cell module (which would potentially mean weakening this outer wall).

[0030] In addition, the proposed fixing of the protection plates prevents a direct heat transfer path between the interior of each cell module and the protection plates. This allows for better thermal isolation of the protection plates from the cell modules. This also prevents or reduces thermal loads on the protection plates in the event of a thermal fault, potentially extending the service life or lifetime of the protection plates in the event of a thermal fault, while still allowing for a particularly material-saving implementation. This can also be facilitated by the fact that fixing the protection plates to the cooling pipe connectors and / or at least one cooling medium pipe allows, for example, heat introduced into the protection plates by heated cell ejecta impinging on the protection plates to be evacuated via the cell module cooling means in a particularly short and direct path, bypassing the cell modules. In this way, the protective effect of the protection plates is maintained particularly reliably and for a particularly long time in the event of a thermal fault, and further propagation of the thermal fault due to cell ejecta or the energy they carry can be particularly easily prevented.

[0031] In yet another possible embodiment of the invention, each protection plate is fixed, in particular screwed, to the housing bottom and / or housing cover of the battery housing and / or to the module housing of at least one of two adjacent cell modules. This allows for a particularly stable and robust fixation of the protection plate, so that even if the battery is subjected to load and damage occurs, the protection plate remains in its original position particularly reliably and reliably and can thereby provide its heat and material protection. In this case, if the protection plate is fixed to the battery housing, it is further possible to avoid a loss of integrity, for example, of the cell modules, such as their mechanical stability, gas tightness and / or ability to contain heat and / or materials.

[0032] Additionally, by fixing the protective plate to the battery housing, in some cases, further protection against misalignment of the cell modules within the storage compartment can be achieved, thereby improving the stability or robustness of the battery.

[0033] Furthermore, by fastening or connecting the guard plates to the battery housing in this manner, heat can be conducted away from the guard plates to the battery housing, where the battery housing can act as a heat sink or radiator with a relatively large surface area (e.g., compared to the guard plates themselves and / or the cell modules), or at least have a relatively large thermal capacity to safely absorb heat generated during a fault and potentially transferred to the guard plates.

[0034] If the protective plate is fixed to the module housing of one of two adjacent cell modules, the module housing or the corresponding unit consisting of the cell module and the protective plate can advantageously be pre-manufactured separately from the battery housing and then particularly easily handled during the manufacture or final assembly of the battery, i.e., can be inserted, for example, into the respective storage compartment. Furthermore, since the protective plate thus permanently maintains its original position relative to the cell module to which it is fixed, the cell module can be particularly reliably and permanently protected from cell ejection or can capture cell ejection from the cell module, even when the battery is subjected to mechanical loads or vibrations.

[0035] The invention also relates to a motor vehicle equipped with a battery according to the invention. The battery according to the invention may in particular be a traction battery of the motor vehicle according to the invention. The motor vehicle according to the invention may in particular be or correspond to a motor vehicle as described in connection with the battery according to the invention. In the proposed motor vehicle application, the advantages described in connection with the battery according to the invention may be particularly relevant and may be particularly beneficially employed, for example to provide a direct improvement in the safety of the motor vehicle occupants and ultimately to enable a particularly efficient or energy-saving operation of the motor vehicle.

[0036] Further features of the invention will become apparent from the claims, the drawings and the description of the drawings. The features and combinations of features mentioned above in the specification and shown below only in the description of and / or in the drawings can be used not only in the respective combinations described, but also in other combinations or alone, without departing from the scope of the invention. [Brief explanation of the drawings]

[0037] [Figure 1]1 is a schematic partial view of a battery with multiple cell modules protected from escalating faults; [Figure 2] FIG. 1 is a schematic partial perspective view of the interior of a battery with guard plates to prevent particle propagation. [Figure 3] FIG. 10 is a schematic partial perspective view of the interior of a battery with guard plates in an alternative arrangement. DETAILED DESCRIPTION OF THE INVENTION

[0038] In the drawings, identical and functionally equivalent elements are numbered the same.

[0039] FIG. 1 shows a partial schematic diagram of a battery 1 with a battery housing 2, a portion of which is shown. The battery 1 is provided with a number of struts 3 for mechanical reinforcement, which divide the interior of the battery housing 2 into a number of storage compartments 4. In this example, parts of two such storage compartments 4 are shown by way of example. Each of these storage compartments 4 accommodates at least two or exactly two adjacent cell modules 5. These cell modules 5 themselves house a number of battery cells 6, and in this example, only selected ones are explicitly labeled for clarity. The battery cells 6 of each cell module 5 are sandwiched between retaining plates 7 located on the outside of each cell module 5.

[0040] If a cell of the battery 1 is defective, particularly if it is a high-voltage accumulator and / or uses lithium-based cell chemistry, high temperatures of several hundred degrees Celsius to over 1000 degrees Celsius and associated gas generation can occur. To prevent this from triggering a rupture or fracture of one of the battery cells 6, the battery cells 6 are each provided with a gas vent 8 in this example. The example illustrates the case of such a failure of one of the battery cells 6 (referred to as a failed cell 9). In the corresponding thermal failure event 10, a cell ejection, which may include, for example, heated gas and / or conductive particles, can escape through the gas vent 8 of the failed cell 9.

[0041] Conventionally, the ejection from the cell spreads inside each storage compartment 4, and as a result, may reach adjacent cell modules 5, causing damage thereto.

[0042] To address this problem, a protective plate 11 is arranged between two adjacent cell modules 5 inside each storage compartment 4 to locally prevent the propagation of cell ejection if a thermal failure occurs in one of the battery cells 6 of the two adjacent cell modules 5. In this example, the protective plate 11 can be fixed to one of the retaining plates 7, for example.

[0043] The guard plates 11 can be configured, for example, as jet guard plates, to block the jet of particles generated by the thermal fault event 10 and thereby protect adjacent cell modules 5 within each storage compartment 4 from the impact or deposition of such particles. Instead, in this example, after the thermal fault event 10, a jet deposit 12 may form on the side of the guard plates 11 facing each failed cell 9. This can, for example, avoid or at least reduce the possibility of short circuits or thermal runaway in adjacent cell modules 5, specifically in the cell modules 5 located on the opposite side of the guard plates 11 from the failed cell 9 within each storage compartment 4.

[0044] There may be several possibilities for implementing the guard plate 11. When selecting a material for the guard plate 11, one can try to achieve a particularly high thermal stability. Thus, for example, materials such as steel or mica can be used for the guard plate 11. These materials are able to maintain their mechanical strength even at temperatures above 1000°C.

[0045] 2 shows a schematic partial perspective view of the battery 1 in an open state without a housing cover or the like for clarity, thereby allowing partial visibility of the cell modules 5 in this example. In this example, by way of example, a protective plate 11 is fixed to one of the cell modules 5 by means of a snap connection 13. In particular, steel joints or clips may be used here to fasten the protective plate 11 to the cell module 5, for example to its retaining plate 7.

[0046] It is also understood here that the protective plate 11 does not have to be formed like a plate in the strict geometric sense, but may for example have bends, bulges, depressions, folded sections, etc. As a result, the protective plate 11 can in this example be adapted to the arrangement and surface irregularities of the surrounding cell modules 5 and / or batteries 1, respectively, i.e. follow their overall contours. However, further or other means of positioning and / or fixing the protective plate 11 are also possible.

[0047] In this regard, Figure 3 exemplarily shows a partial schematic perspective view of one or more batteries 1 in yet another possible embodiment. In this example, two cell modules 5 are again partially shown, with a protective plate 11 arranged between them. In this example, the protective plate 11 is additionally or alternatively fastened to the coolant pipes 14 of the battery 1, in particular via elastically deformable snap connections 13, each partially surrounding one of the coolant pipes 14.

[0048] Further alternative or additional means for fixing or connecting the protective plate 11 are, for example, connecting the protective plate 11 to a housing component or a housing wall of the battery housing 2 and / or to at least one of two adjacent cell modules 5.

[0049] In either case, the fixing means used, such as snap connections 13 and / or screws, like the protective plate 11 itself, are made of or manufactured from a heat-resistant material such as steel, so that the protective plate 11 can be kept in place and position, i.e. in its original installed position, even at temperatures in excess of 1000°C, which may occur during a thermal fault event 10 inside the battery 1.

[0050] Overall, the described example shows how particle protection plates can be realized and arranged to separate battery modules from one another, especially in a common compartment of the appropriate housing of a high-voltage accumulator. [Explanation of symbols]

[0051] 1 battery 2 Battery Housing 3 Struts 4 storage compartments 5 cell module 6 battery cells 7 Retaining plate 8 Gas vent 9 Faulty Cell 10. Heat Hazard Events 11 Protective Plate 12 Ejecta deposits 13 Snap Connection 14 Coolant tube

Claims

1. 1. A battery (1) comprising a battery housing (2), in which a plurality of separate storage compartments (4) are formed by housing walls of the battery housing (2) and a plurality of load-bearing struts (3) extending from one housing wall of the battery housing (2) to the housing wall of the battery housing (2) located opposite the housing wall of the battery housing (2), and a plurality of cell modules (5) are arranged in each of the storage compartments, and between two adjacent cell modules (5) arranged in one of the storage compartments (4), a protective plate (11) that does not bear any load and is separate from the structure of the battery housing (2) or the storage compartment (4) is arranged to regionally prevent the propagation of cell ejection (12) to the other cell module (5) in the event of thermal runaway of one battery cell (6, 9) of the two adjacent cell modules (5).

2. 2. The battery (1) according to claim 1, The protection plates (11) are arranged so that their main deployment planes are perpendicular to the main extension direction of the struts (3) that define each of the storage compartments (4). A battery characterized by:

3. 3. A battery (1) according to claim 1 or 2, The protective plate (11) is made of steel plate or mica material. A battery characterized by:

4. A battery (1) according to any one of claims 1 to 3, The protection plates (11) are spaced apart, at least in their main extension direction, from the struts (3) that define each of the storage compartments (4). A battery characterized by:

5. A battery (1) according to any one of claims 1 to 4, The protection plate (11) has, in its main development plane, at most the same size as, in particular smaller than, the side walls of the two adjacent cell modules (5) facing the protection plate. A battery characterized by:

6. A battery (1) according to any one of claims 1 to 5, The guard plates (11) are fixed to the steel joints by snap connections (13) A battery characterized by:

7. A battery (1) according to any one of claims 1 to 6, Each of the two adjacent cell modules (5) has a plurality of battery cells (6) and a pressing plate (7) on the end face side that holds the battery cells (6), and the protective plate (11) is fixed to the pressing plate (7) of only one of the two cell modules (5) on the outside, the pressing plate (7) facing the other cell module (5). A battery characterized by:

8. A battery (1) according to any one of claims 1 to 7, The protection plate (11) is fixed to the cooling pipe connector (14) of one of the two adjacent cell modules (5) and / or the cooling medium pipe (14) of the cell module cooling means. A battery characterized by:

9. A battery (1) according to any one of claims 1 to 8, The protection plate (11) is fixed, in particular screwed, to the housing bottom and / or housing cover of the battery housing (2) and / or to the module housing of at least one of the two adjacent cell modules (5). A battery characterized by:

10. 10. A motor vehicle equipped with a battery (1) according to any one of claims 1 to 9, in particular as a traction battery (1).

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