Battery with particle protection and motor vehicle equipped therewith

Abstract

A battery (1) and a motor vehicle equipped with the battery. In a battery housing (2) of a battery (1), a plurality of separate receiving compartments (4) are formed by housing walls of the battery housing and load-absorbing supports (3) extending between the housing walls. A plurality of individual modules (5) are arranged in each of the receiving compartments (4). A protective plate (11) that does not absorb a load is arranged between two individual modules (5) arranged adjacent to each other in one of the receiving compartments (4) in order to locally block the propagation of individual ejections (12) from one of the two adjacent individual modules (5) to the other. The protective plate (11) is different from the battery housing (2) and the receiving compartment (4) in structure.

Description

Technical Field

[0001] The invention relates to a battery which can be designed in particular as a traction battery for a motor vehicle and also to a motor vehicle having such a battery. Background Art

[0002] Batteries are used today in many different technical fields and applications. In particular, due to the ever-increasing demands placed on batteries, for example with regard to the greatest possible energy density and capacity and relatively high charging and discharging powers, the operational safety of batteries is an important factor in their configuration and design. In order to ensure the safety of batteries, for example high-voltage traction batteries of motor vehicles or the like, even in the event of an accident or fire, considerable effort is required in conventional batteries, which disadvantageously entails correspondingly high costs as well as a high requirement for installation space and a high weight.

[0003] In particular, in the event of a defect in a battery cell, heat propagation and thus so-called thermal runaway of multiple battery cells may occur. In this case, hot gases and conductive particles may be ejected from the corresponding thermal runaway battery cell, which may cause the provided insulating air gap or creepage distance to be damaged or eliminated at critical locations inside the battery. Therefore, in today's high-voltage batteries, a large number of fire-proof walls or fire-proof supports are usually provided in order to improve safety. However, these may disadvantageously lead to a reduction in the overall energy density of the battery and an undesirably high weight of the battery or contribute to this. Therefore, usually not every battery cell or not every single cell module including a plurality of battery cells is completely encapsulated accordingly. However, if one or more battery cells in a single cell module thermal runaway occurs, this causes the conductive particles to fly unhindered to the adjacent single cell module, where they are deposited and there, at least after a certain time, the provided air gap and creepage distance are damaged. Depending on the voltage level, this may, for example, lead to the occurrence of arcs or short circuits, which may further aggravate the propagation behavior inside the battery.

[0004] For example, EP2506336A1 describes a thermal management system for a battery pack. A multi-faceted air-sealed battery pack housing is provided for accommodating a large number of batteries. Here, the side portion of the battery pack housing contains a hollow space, and the housing wall inside it contains a plurality of through holes for allowing gas to pass from the inside of the battery pack housing to the hollow space. In addition, an integrated gas discharge opening that is in gas exchange with the hollow space is also provided in the outer wall of the battery pack housing. These gas discharge openings are sealed with a flip arrangement structure having a one-way valve. However, even in the case of this arrangement, although the interior of the battery pack can be divided into multiple sections by lateral supports, thereby preventing thermal events from propagating from one section to the next, multiple single modules are arranged in each section.

[0005] As another method for limiting the consequential damage caused by thermal runaway of a battery cell, DE102020128756A1 describes a battery with a battery housing and a plurality of battery cells arranged therein. The battery cells each have an electrical contact and a degassing site on one side. Here, an electrically insulating planar protective element is arranged between the outer wall of the battery housing (the degassing site faces the outer wall) and the battery cell, so that the protective element covers the degassing site and the electrical contact. The protective element is heat-resistant on most of its surface and has a preset breaking site at the degassing site, which can be broken through by the material discharged from the corresponding battery cell in the event of a thermal failure. Summary of the invention

[0006] The object of the present invention is to provide a battery which is safe and space-efficient.

[0007] This object is solved by the technical solution of the independent claim. Other possible design solutions of the present invention are disclosed in the dependent claims, the specification and the drawings. The features, advantages and possible design solutions described within the scope of the description of one of the technical solutions of the independent claim should at least be regarded by analogy as the features, advantages and possible design solutions of the corresponding technical solutions of other independent claims and any possible combination of the technical solutions of the independent claims (such as possible combination with one or more dependent claims in the dependent claims).

[0008] In particular, the battery according to the invention can be designed as a traction battery for a motor vehicle. However, the battery according to the invention can also be, for example, a household battery or a buffer or stabilization battery for an electrical network or the like. The battery according to the invention has a battery housing in which a plurality of individual receiving compartments are formed by means of a housing wall of the battery housing, i.e., for example, by means of a housing bottom, a housing cover and an outer wall or side wall of the battery housing, and a plurality of load-absorbing supports extending from a housing wall of the battery housing to an opposite housing wall of the battery housing. For this purpose, a plurality of supports can extend, in particular, parallel to one another.

[0009] For example, the support can be a transverse support or a structural element or a reinforcing element designed as a fire protection transition or the like.

[0010] Thus, the battery housing can here have receiving compartments or compact elements that are at least substantially separated from one another or sealed from one another. For example, between these receiving compartments or compact elements, only lead-through guides for wiring and / or coolant lines or the like can be provided. Thus, the load-absorbing support can hinder or prevent ejections, such as heated gases and / or particles, from propagating from a battery cell arranged in a receiving compartment to a battery cell arranged in an adjacent receiving compartment or to a battery cell arranged in an adjacent receiving compartment. At the same time, the support can be configured and arranged to absorb or transmit mechanical loads acting on the battery housing from the outside, for example mechanical loads acting on the battery housing from the outside in the event of an accident with the corresponding motor vehicle.

[0011] In the battery of the present invention, a plurality of, in particular at least or exactly two, cell modules are arranged in some or all of the receiving compartments. These cell modules can each include a plurality of electrically interconnected individual battery cells. In addition, the cell modules can each have their own module housing for receiving the corresponding battery cells.

[0012] According to the invention, a non-load-absorbing protective plate is arranged between two cell modules arranged adjacent to each other in one of the receiving compartments, in particular when viewed in the main extension plane of the support. Thus, the protective plate can be arranged between adjacent cell modules arranged in the receiving compartment or the side walls of the corresponding module housing facing each other. The corresponding protective plate is arranged and designed here to locally prevent the propagation of cell ejecta, in particular heated particles and / or conductive particles, to the other of the two adjacent cell modules when a battery cell of one of the two adjacent cell modules undergoes thermal runaway.

[0013] Therefore, the protective plate or plates of the battery according to the invention can be made of a heat-resistant material. For example, such a protective plate can be configured to withstand temperature loads of several hundred degrees Celsius or 1000° C. or more for several minutes or withstand loading with correspondingly heated particles from battery cells in thermal runaway.

[0014] Partially blocking such a battery ejection can mean in particular that the corresponding protective plate does not completely or fully separate two adjacent cell modules from each other. The protective plate therefore does not divide the receiving compartment into two receiving compartments. Accordingly, according to the invention, the corresponding protective plate is different from the structure of the battery housing and the receiving compartment, that is, in particular also from the load-absorbing support.

[0015] Therefore, the at least one protective plate provided in the battery according to the invention is not designed as a structurally load-bearing or structurally forming component of the battery or the battery housing, i.e., not as a mechanically stabilizing component of the battery or the battery housing. Likewise, the corresponding protective plate is not part of the compartment structure of the battery housing formed by the housing wall and the support part. In particular, it can be provided that the corresponding protective plate is not configured, designed and arranged for absorbing or transmitting mechanical loads or forces acting on the battery housing from the outside, i.e., for example, is not integrated with a load-absorbing support part.

[0016] By the design scheme proposed here of the protection plate provided according to the present invention, the protection plate can be designed to be particularly small, light and space-saving, and at the same time can be optimized in terms of its function of hindering the battery ejection. In addition, the protection plate can be arranged in the most likely propagation path of such a monomer ejection, for example, between adjacent monomer modules, in a targeted manner, that is, particularly accurately or in order to optimize the monomer ejection, and / or in particular only covers components that are particularly susceptible to damage or are related to short circuits. This can be achieved particularly simply, selectively and in detail and therefore effectively and space-savingly at the same time, that is, the overall particularly efficient, because the corresponding protection plate does not have to be designed to absorb loads at the same time, that is, it is designed to be non-mechanically stable. Thus, the protection plate can be arranged or designed accordingly, for example, flexibly according to the arrangement structure or contour of other components. Therefore, the protection plate can, for example, have a bend and / or a blank and / or an area with reduced material thickness and / or the like. Therefore, the protection plate can follow the components surrounding the corresponding contour, and / or can also utilize the irregularly shaped free space between the corresponding two adjacent monomer modules. This therefore allows the protective plate to be arranged with effective use of any hollow spaces or spacings that may be present between adjacent cell modules and / or battery components arranged there.

[0017] The invention thus makes it possible to achieve an effectively improved safety or an improved limitation of the consequential damage in the event of a thermal runaway of a battery cell, without increasing the installation space requirement and the weight of the entire battery or increasing it only minimally. If possible, the protective plate can then, for example, reduce the safety margin or the configuration for air gaps or creepage distances and / or the electrical and / or thermal insulation of the components now protected by the protective plate.

[0018] Here, the term "protection plate" is to be understood only as a support point for a possibly rough shape of the corresponding component. According to the invention, the protection plate therefore does not necessarily have to be strictly plate-shaped.

[0019] In one possible embodiment of the invention, the respective protective plate is arranged or oriented such that its main extension direction or main extension plane is perpendicular to the main extension direction of the adjacent support part, i.e., laterally delimiting the respective receiving compartment. Thus, by the combination of support part and protective plate, a stable, robust and safe design of the battery can be achieved in a particularly simple and particularly space-saving manner, while at the same time saving structural space. This can be applicable, for example, in comparison with a structure composed of crossed support parts, in which only a single cell module is arranged in each receiving compartment surrounded by the support part. Thus, in this case, the support part can be, for example, a transverse support part relative to the entire battery or battery housing, while the protective plate or the protective plates can be arranged in the longitudinal direction.

[0020] In another possible embodiment of the invention, the corresponding protective plate is made of a steel sheet or a mica material. This mica material can be or include pure mica or mica, i.e. a mineral material from the mica group. The proposed design of the protective plate here allows for a particularly good protective effect while requiring particularly little space, i.e., for example, the material thickness is particularly low, and the weight of the protective plate is correspondingly low. As a result, the safety or robustness of the battery can be improved or achieved particularly efficiently.

[0021] In another possible embodiment of the invention, the respective protective plate is spaced apart from the adjacent support part, i.e., laterally delimiting the respective receiving compartment, at least in its main extension direction or along its main extension direction. Thus, here, as viewed in or along the main extension direction of the protective plate, there can be a spacing or gap between the respective support part and the side edge of the protective plate facing the support part. In other words, it can be provided that the protective plate does not extend around or at least in its main extension direction up to the support part and / or the housing wall delimiting the respective receiving compartment. Thus, for example, the protective plate can leave a deformation space or a connection to the deformation space there in the battery housing.

[0022] Such a deformation space can provide space for deformation when mechanical forces or loads act on the battery housing from the outside, ie for deformation of the outer housing wall of the battery housing, in order to prevent the cell module from being subjected to corresponding force loading.

[0023] By the spacing between the protective plate provided here and the support and / or housing wall, the pressure increase in the area of ​​the corresponding single cell module where the battery cell thermal runaway is located can also be limited by the correspondingly increased connected spatial volume, for example compared to a completely sealed single package of all single cell modules. This also helps to limit the damage consequences of thermal runaway of the battery cell. At the same time, from a safety perspective, the spacing provided here can be ignored, because the probability that the single cell ejection passes through and then falls on the corresponding adjacent single cell module or its safety-related electrical components in this regard or at other critical locations may be relatively small - for example compared to the probability that the single cell ejection is intercepted or blocked by the protective plate.

[0024] Furthermore, the spacing provided here next to the protective plate makes it possible to insert the protective plate and / or the cell module particularly easily into the receiving compartment or the battery housing and thus to achieve particularly simple production or final assembly of the battery. Furthermore, the spacing provided here ensures that even in the case of mechanical loads acting on the battery housing from the outside, direct introduction of forces into the protective plate is avoided or minimized. This reduces the risk of damage or displacement of the protective plate in this case. As a result, the protective plate can also perform its protective function of heat insulation and material blocking particularly reliably and safely under such load conditions.

[0025] In another possible embodiment of the present invention, the corresponding protective plate is at most as large as the side walls of the corresponding two adjacent single modules or the module housings of these single modules facing the protective plate in its main extension plane, i.e. in the direction or size forming these main extension planes, in particular smaller than the side walls. In other words, the protective plate does not protrude beyond the single module in the direction of its main extension plane. As a result, the protective effect can be achieved by the protective plate without requiring additional structural space for the battery in the direction of the main extension plane forming the protective plate and without, for example, preventing the single module from making contact and / or preventing the routing or arrangement of cables or coolant lines or the like in the battery or in the corresponding receiving compartment. As a result, the protective plate provided according to the present invention can also be integrated into existing battery designs in a particularly simple and space-efficient manner.

[0026] In another possible design of the present invention, the corresponding protective plate is fixed to the steel connecting part by means of a snap connection structure (also called a clip connection structure). This snap connection structure can achieve a particularly simple fixation of the protective plate by elastic deformation and hooking the connecting part into the corresponding counterpart or hooking it together with the corresponding counterpart. Compared with the threaded connection or welding of the protective plate, this snap connection structure can, for example, achieve a particularly simple manufacture or final assembly of the battery. The steel design of the deformable connecting part of the snap connection structure can ensure a particularly high temperature stability of the snap connection structure. It can thus be achieved that the snap connection structure can keep the protective plate in its prescribed installation position even in the event of a thermal failure of one of the battery cells of the adjacent single cell module. This can be seen, for example, in comparison with the plastic-based fixation of the protective plate.

[0027] In another possible design of the present invention, adjacent single-cell modules each include a plurality of battery cells and a pressure plate that clamps the end sides of these battery cells. Here, the protective plate is fixed to the outer side of such a pressure plate of only one of the two single-cell modules that faces the corresponding other single-cell module, that is, at or on the outer side of the pressure plate that faces away from the battery cell of the corresponding single-cell module or faces the corresponding other single-cell module. Since such a pressure plate must be configured to be correspondingly stable according to its nature, that is, in order to meet its main task of stably clamping the battery cell, the pressure plate can also provide a correspondingly stable holding possibility or fixing possibility for the protective plate without further adaptation. Because the protective plate can be fixed in a correspondingly particularly safe and low-cost manner, that is, for example, fixed without an additional retaining structure. In addition, the protective plate can also be fixed or arranged in a particularly space-saving manner, because, for example, it is not necessary to plan tolerances for the separate insertion of the single-cell module and the protective plate into the battery housing or the corresponding receiving compartment. In particular, by fixing the protective plate to one of the cell modules, the corresponding composite consisting of the cell module and the protective plate can be prefabricated separately, i.e. outside the battery, and can then be particularly easy to handle during the manufacture or final assembly of the battery, i.e. for example placed in a corresponding receiving compartment, in particular independently of the corresponding other cell module of two adjacent cell modules.

[0028] In another possible design of the present invention, the corresponding protective plate is fixed to at least one coolant connection of one of the two adjacent single-cell modules and / or to at least one coolant pipeline of the single-cell module cooling structure. Such a single-cell module cooling structure can be a cooling device or a cooling system for cooling one or two adjacent single-cell modules when the corresponding battery is in operation. The fixing of the protective plate provided here can avoid damage to the integrity of the single-cell module, because, for example, it is not necessary to arrange fixing holes or threaded connection structures or the like in the outer wall of the single-cell module for fixing the protective plate, which may mean potential weakening of the outer wall.

[0029] In addition, by fixing the protective plate proposed here, it is possible to avoid constructing a direct heat conduction path between the corresponding monomer module and the protective plate through the corresponding fixing device. Thus, an improved thermal decoupling of the protective plate and the monomer module can be achieved. This can in turn avoid or reduce the additional thermal load of the protective plate in the case of a thermal fault and thus increase the service life of the protective plate or the resistance time in the case of a thermal fault in a particularly material-saving design. Here, this can also be supported by the following, that is, by fixing the protective plate to the cooling line connection and / or at least one coolant line, it can be achieved that the heat input into the protective plate, for example, by the heated monomer ejection hitting the protective plate, is dissipated in a particularly short and direct way via the monomer module cooling structure. Thus, the protective effect of the protective plate can be maintained particularly safely and for a particularly long time in the case of a thermal fault and can further hinder the further propagation of the energy transmitted by the monomer ejection or the monomer ejection in a particularly simple manner.

[0030] In another possible embodiment of the invention, the corresponding protective plate is fixed, in particular screwed, to the housing bottom of the battery housing and / or to the 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 fixing of the protective plate, so that even if the battery is loaded or damaged, the protective plate remains in its prescribed position in a particularly safe and reliable manner and can exert its thermal and material barrier protective effects there. If the protective plate is fixed to the battery housing, it is also possible to avoid impairment of the integrity of the cell module, i.e., for example, mechanical stability, sealing properties and / or thermal and / or material clamping capacity.

[0031] Furthermore, by fastening the protective plate to the battery housing, it is possible to achieve additional protection against shifting of the cell module within the receiving compartment and thus to achieve improved stability or robustness of the battery.

[0032] Furthermore, such a fastening or connection of the protective plate to the battery housing can also dissipate the heat of the protective plate to the battery housing. In this case, the battery housing can act as a relatively large-surface cooling body or heat sink, or have at least a relatively large thermal capacity, compared to the protective plate itself and / or the cell module, for example, and thus act as a heat sink for safely absorbing the heat that occurs in the event of a fault and is possibly input into the protective plate.

[0033] If the protective plate is fastened to the module housing of one of two adjacent cell modules, the corresponding assembly consisting of the corresponding module housing or cell module and the protective plate can advantageously be prefabricated separately from the battery housing and can then be particularly easily handled during the production or final assembly of the battery, i.e., inserted, for example, into a corresponding receiving compartment. Furthermore, it can be achieved particularly safely and reliably that the protective plate is permanently held in its prescribed position relative to the cell module to which it is fastened, and thus that the cell module can be permanently and particularly safely shielded from cell spray or that cell spray from the cell module can be intercepted even when the battery is subjected to mechanical loads or vibrations.

[0034] The invention also relates to a motor vehicle equipped with a battery according to the invention. In this case, the battery according to the invention can be, in particular, a traction battery of a motor vehicle according to the invention. The motor vehicle according to the invention can be, in particular, the motor vehicle mentioned in connection with the battery according to the invention or can correspond to this motor vehicle. In the motor vehicle application proposed here of the motor vehicle, the advantages described in connection with the battery according to the invention can be particularly relevant and can act in a particularly beneficial manner, for example in order to directly improve the safety of the vehicle occupants of the motor vehicle and ultimately to enable a particularly efficient or energy-saving operation of the motor vehicle.

[0035] Further features of the invention can be derived from the claims, the drawings and the description of the drawings. The features and feature combinations mentioned above in the description of the drawings and the features and feature combinations shown below in the description of the drawings and / or in the drawings alone can be used not only in the respectively indicated combination but also in other combinations or alone without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings show:

[0036] Figure 1 A partial schematic diagram of a battery is shown with a plurality of single modules protected from failure expansion;

[0037] Figure 2 a partial schematic perspective view showing the interior of a battery with a protective plate for hindering particle propagation; and

[0038] Figure 3A partial schematic perspective view of the interior of a battery is shown with a protective plate in an alternative arrangement. DETAILED DESCRIPTION

[0039] In the figures, identical elements and elements having the same function are provided with the same reference symbols.

[0040] Figure 1 A schematic diagram of a section of a battery 1 is shown with a partially shown battery housing 2. For mechanical reinforcement, the battery 1 has a plurality of supports 3, by means of which the interior of the battery housing 2 is divided into a plurality of receiving compartments 4. By way of example, a section of two such receiving compartments 4 is shown here. At least or exactly two adjacent cell modules 5 are arranged in each receiving compartment 4. These cell modules 5 themselves comprise a plurality of battery cells 6, of which only selected ones are explicitly indicated here for the sake of clarity. The battery cells 6 of the cell modules 5 are each clamped between external pressure plates 7 of the respective cell module 5.

[0041] If there is a cell defect in the battery 1, in particular if the battery is a high-voltage accumulator and / or lithium-based cell chemistry is used therein, this can lead to the development of high temperatures in the range of several hundred degrees Celsius up to more than 1000 degrees Celsius and, with it, to the formation of gases. In order to avoid an uncontrolled burst or rupture of one of the battery cells 6 caused by this, the battery cells 6 here have corresponding degassing sites 8. By way of example, such a fault situation of one of the battery cells 6 is shown here, which is referred to as the faulty cell 9. In the event of a corresponding thermal fault event 10, cell ejection can be discharged through the degassing site 8 of the faulty cell 9, which can include, for example, heated gases and / or conductive particles.

[0042] Conventionally, such cell ejections can propagate within the respective receiving compartment 4 and can thus also reach adjacent cell modules 5 and can cause consequential damage there.

[0043] In order to cope with this problem, a protective plate 11 is currently arranged between two adjacent cell modules 5 in the corresponding receiving compartment 4 to prevent the propagation of cell ejection in the event of a thermal failure of one of the battery cells 6 of one of the two corresponding cell modules 5. For example, the protective plate 11 can be fixed to one of the pressure plates 7 here.

[0044] For example, the protective plate 11 can be designed as a jet protection plate to block the particle jet generated by the thermal fault event 10 and thereby protect the corresponding adjacent unit module 5 in the corresponding receiving compartment 4 from the corresponding particle bombardment or the corresponding particle deposition. Instead, here after the thermal fault event 10, the ejection material deposition 12 appears on the side of the protective plate 11 facing the corresponding faulty cell 9. This can avoid, for example, a short circuit or the initiation of thermal runaway in the adjacent cell module 5 arranged in the corresponding receiving compartment 4, that is, here on the side of the protective plate 11 facing away from the faulty cell 9, or at least reduce the probability of a short circuit or the initiation of thermal runaway in the adjacent cell module 5 arranged in the corresponding receiving compartment, that is, here on the side of the protective plate facing away from the faulty cell.

[0045] There are many possible solutions for implementing the protective plate 11. When selecting the material for the protective plate 11, high thermal stability can be particularly sought. For example, materials such as steel or mica can be used for the protective plate 11, which can maintain their mechanical strength even at temperatures exceeding 1000°C.

[0046] To further illustrate, Figure 2 A schematic perspective view of a section of a battery 1 in an open state, i.e., for example, without a housing cover, is shown. Thus, a plurality of cell modules 5 can be partially seen here. By way of example, a protective plate 11 is fastened to one of the cell modules 5 by means of a snap connection 13. In particular, steel connection elements or clips can be used to fasten the protective plate 11 to the cell module 5, for example to its pressure plate 7.

[0047] It can also be seen here that the protective plate 11 does not necessarily have to be designed in a plate-like manner in a strictly geometric sense, but can, for example, have bends, ridges, recesses, folded areas and / or the like. As a result, the protective plate 11 can be adapted to the arrangement or course of the corresponding cell module 5 and / or other surrounding components of the battery 1, i.e. follow their overall contour. However, other or further arrangements and / or fastening possibilities of the protective plate 11 are also possible.

[0048] In this regard, Figure 3 A schematic perspective view of a portion of a battery 1 in another possible design is shown as an example. Here, two cell modules 5 are also partially shown, between which a protective plate 11 is arranged. The protective plate 11 is here—additionally or alternatively—fixed to the coolant lines 14 of the battery 1, in particular via an elastically deformable snap-on connection 13 that partially surrounds a respective one of the coolant lines 14.

[0049] Another alternative or additional possibility for fixing or connecting the protective plate 11 is, for example, a screw connection structure of the protective plate 11 to a housing part or housing wall of the battery housing 2 and / or a screw connection structure to at least one of two adjacent cell modules 5 .

[0050] In any case, the fixing means used, such as a snap-on connection structure 13 and / or a screw or the like - like the protective plate 11 itself - can be composed of or made of a high-temperature resistant material (such as steel) so that the protective plate 11 can be kept in place, i.e. in its prescribed installation position, even at temperatures exceeding 1000°C (such as may occur when a thermal failure event 10 occurs in the battery 1).

[0051] In summary, the described example shows how particle jet protection plates for isolating cell modules from one another can be realized and arranged in a common receptacle of a corresponding housing, in particular a corresponding housing of a high-pressure accumulator. Reference numerals list

[0052] 1 Battery

[0053] 2Battery housing

[0054] 3 Support part

[0055] 4 receiving compartments

[0056] 5 single module

[0057] 6 battery cells

[0058] 7 Pressure plate

[0059] 8 Degassing area

[0060] 9 Faulty single unit

[0061] 10 Thermal Fault Events

[0062] 11 Protection board

[0063] 12 Ejecta deposition

[0064] 13 snap connection structure

[0065] 14 Coolant pipe

Claims

1. A battery (1) comprising a battery housing (2), in which a plurality of separate receiving compartments (4) are formed by a housing wall of the battery housing (2) and a plurality of load-absorbing supports (3) extending from a housing wall of the battery housing (2) to an opposite housing wall of the battery housing (2), in which a plurality of cell modules (5) are respectively arranged, wherein: A non-load-absorbing protective plate (11) is arranged between two cell modules (5) arranged adjacent to each other in one of the receiving compartments (4) to locally prevent cell ejection (12) from propagating to another cell module (5) when a battery cell (6, 9) of one of the two adjacent cell modules (5) experiences thermal runaway. The protective plate has a different structure from the battery housing (2) and the receiving compartment (4).

2. The battery (1) according to claim 1, characterized in that The protective plate (11) is arranged such that a main extension plane of the protective plate is perpendicular to a main extension direction of a support portion (3) that delimits a corresponding receiving compartment (4).

3. A battery (1) according to any one of the preceding claims, characterized in that The protection plate (11) is made of a steel plate or a mica material.

4. A battery (1) according to any one of the preceding claims, characterised in that The protective plate (11) is spaced apart from the support portion (3) which delimits the corresponding receiving compartment (4) at least in its main extension direction.

5. The battery (1) according to any one of the preceding claims, characterized in that The protective plate (11) is at most as large in its main extension plane as the side walls of two adjacent cell modules (5) facing the protective plate, in particular smaller than the side walls of two adjacent cell modules facing the protective plate.

6. A battery (1) according to any one of the preceding claims, characterised in that The protection plate (11) is fixed to the steel joint component by means of a snap connection structure (13).

7. A battery (1) according to any one of the preceding claims, characterised in that Two adjacent cell modules (5) each include a plurality of battery cells (6) and a pressure plate (7) for clamping the end sides of the battery cells, and the protective plate (11) is fixed to the outer side of the pressure plate (7) of only one of the two cell modules (5) that faces the corresponding other cell module (5).

8. A battery (1) according to any one of the preceding claims, characterised in that The protection plate (11) is fixed to a cooling pipeline connection portion (14) of one of two adjacent single-unit modules (5) and / or to a coolant pipeline (14) of a single-unit module cooling structure.

9. A battery (1) according to any one of the preceding claims, characterised in that The protective plate (11) is fixed, in particular screwed, to a housing bottom and / or a housing cover of the battery housing (2) and / or to a module housing of at least one of two adjacent cell modules (5). 10 . A motor vehicle comprising a battery ( 1 ) according to claim 1 , in particular as a traction battery ( 1 ).

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