BATTERY HOUSING COMPONENT, METHOD FOR MANUFACTURING A BATTERY HOUSING COMPONENT

Description

[0001] The present invention relates to a battery housing component for a traction battery and methods for its manufacture. Furthermore, the present invention relates to a battery housing for receiving battery cells and / or battery modules, a traction battery for a motor vehicle, and a motor vehicle with a traction battery.

[0002] Battery housing components for traction batteries are subject to stringent requirements regarding their mechanical stability and fire resistance. Battery housing components, particularly those installed in the base of a traction battery housing or the battery itself, typically also serve to protect against external mechanical impacts, such as those that occur when driving over an obstacle and colliding with the battery housing component. Consequently, such battery housing components can be designed as underbody protection or as a battery housing shell with impact protection.

[0003] The battery cells or modules arranged within a traction battery housing enter an irreversible chemical decomposition process at a certain temperature, during which a large amount of stored energy is released through oxidation in a short time. A battery cell that is initially sealed builds up pressure and bursts at a predetermined point, releasing a jet of hot gas at high velocity. This gas jet, upon impact, stresses the surface of a battery housing component, such as the battery casing itself, both thermally and abrasively due to particles carried along in the gas jet.

[0004] In the event of a fire outside a traction battery housing or within a traction battery itself, the battery cells or modules located within the traction battery housing must be protected from heat entering the housing's internal volume. Furthermore, the mechanical integrity of the battery housing components must be maintained for as long as possible.

[0005] To ensure the safety of the traction battery, a thermally and mechanically resistant battery housing is of great importance.

[0006] Battery housing components made of plastic, especially those made of fiber-reinforced plastics, exhibit excellent mechanical stability and good thermal insulation. However, their structure can be quite complex, making the production of such a battery housing component challenging.

[0007] The invention is based on the objective of providing an improved battery housing component that exhibits increased stability under thermal and mechanical stress and has a simplified design.

[0008] The problem underlying the present invention is solved by a battery housing component having the features of claim 1. Advantageous embodiments of the battery housing component are described in the dependent claims.

[0009] More precisely, the problem underlying the present invention is solved by a battery housing component for a traction battery, wherein the battery housing component comprises a base component having a first plastic material and at least one integrally formed protective element having a second plastic material. The protective element has at least two longitudinal recesses, wherein a first region of the protective element, which is arranged between the at least two longitudinal recesses, is offset vertically with respect to at least a second region such that the first region of the protective element forms part of an outer surface of the battery housing component and the second region of the protective element forms part of an inner surface of the battery housing component. The protective element is connected to the base component such that at least one longitudinal recess of the protective element is closed by the base component.

[0010] The correspondingly designed battery housing component has the advantage of increased stability due to its quasi-sandwich construction. According to the invention, the quasi-sandwich construction means that the at least one first region of the protective element and the second regions of the protective element surrounding this first region have different height levels. The first region and the second regions surrounding it are part of the integrally formed protective element, and the first region is in contact with the second regions surrounding it via the base component, and is preferably connected to the second regions via the base component. This is because the base component closes the at least one longitudinal recess of the protective element.

[0011] At the same time, the battery housing component according to the invention has a simple structure and can be manufactured using a tool. According to the invention, tool-based manufacturing means that the battery housing component, after being manufactured using a tool, requires no further production steps to complete.

[0012] The base component can also be referred to as the support component. The base component is preferably formed in one piece. More preferably, the base component is monolithic. The first plastic is preferably a thermoplastic. The first plastic preferably comprises polyamide (PA) and / or polypropylene (PP) and / or polypropylene terephthalate (PPT).

[0013] The protective element can also be referred to as a reinforcing element. The protective element is preferably formed in one piece. More preferably, the protective element is monolithic. The second plastic is preferably a thermoplastic. The second plastic preferably comprises polyamide (PA) and / or polypropylene (PP) and / or polypropylene terephthalate (PPT).

[0014] The second plastic can also be a thermosetting plastic or be made from a thermosetting plastic.

[0015] The first plastic and the second plastic are preferably selected such that they are weldable to each other. Consequently, the first plastic and the second plastic are preferably weldable to each other.

[0016] The second area(s) of the protective element is / are directly adjacent to the first area of ​​the protective element and is / are separated from it only by the longitudinal recess.

[0017] In a top view of the protective element, i.e., in a viewing direction parallel to the normal vector of the second region, the protective element is preferably continuous. Consequently, the first region and the second regions completely cover the projection surface of the protective element.

[0018] Preferably, the protective element is connected to the base component in such a way that all longitudinal recesses of the protective element are closed by the base component.

[0019] The protective element is preferably created by cutting or inserting at least two longitudinal recesses into a flat component. These longitudinal recesses preferably do not extend from one end of the component to the opposite end. In other words, the longitudinal recesses begin and end within the flat component. This ensures that the protective element is formed in one piece. After the at least two longitudinal recesses are cut, the area between them is pressed down relative to the directly adjacent areas, so that the first area of ​​the protective element is offset in height from the second area(s) that frame it.

[0020] Preferably, the battery housing component is designed such that the first area of ​​the protective element is limited or enclosed by two second areas, wherein the first area is offset in height with respect to the two second areas, so that the first area of ​​the protective element forms part of the outside of the battery housing component and the two second areas of the protective element form part of the inside of the battery housing component.

[0021] Preferably, the battery housing component is designed such that the protective element has an integer multiple of two longitudinal recesses, e.g. .The protective element has two, four, six, etc. longitudinal recesses. Between each pair of directly adjacent longitudinal recesses, a first region of the protective element is formed, which is bounded or enclosed by two second regions, each of the first regions being offset vertically with respect to the two second regions, so that the respective first regions of the protective element form part of the outside of the battery housing component and the second regions of the protective element form part of the inside of the battery housing component.

[0022] Preferably, the battery housing component is designed such that the battery housing component has a connecting flange arranged at the edge.

[0023] Preferably, the battery housing component is designed such that the base component rests on a first connecting surface of the first area of ​​the protective element facing the inside of the battery housing component and / or on a second connecting surface of the at least one second area of ​​the protective element facing the outside of the battery housing component.

[0024] The appropriately designed battery housing component exhibits a further improved rigidity.

[0025] Preferably, the battery housing component is designed such that the base component is connected, preferably by a material bond, to the first connecting surface of the first region facing the inside of the battery housing component. Further preferably, the battery housing component is designed such that the base component is connected, preferably by a material bond, to the second connecting surface of the at least one second region of the protective element facing the outside of the battery housing component.

[0026] The problem underlying the present invention is solved by a battery housing component having the features of claim 3.

[0027] More precisely, the problem underlying the present invention is solved by a battery housing component for a traction battery, wherein the battery housing component comprises a base component having a first plastic material and at least one integrally formed protective element having a second plastic material. The protective element has at least one longitudinal recess, wherein the protective element is connected to the base component such that the longitudinal recess of the protective element is closed by the base component, and that the protective element forms part of an inner or outer surface of the battery housing component, and that the area of ​​the base component which closes the longitudinal recess of the protective element forms the remaining part of the inner surface of the battery housing component.

[0028] The correspondingly designed battery housing component has the advantage of increased stability due to its sandwich construction. According to the invention, the sandwich construction means that the base component is arranged, at least partially, between the protective element and the protective plate.

[0029] At the same time, the battery housing component according to the invention has a simple structure and can be manufactured using a tool. According to the invention, tool-based manufacturing means that the battery housing component, after being manufactured using a tool, requires no further production steps to complete.

[0030] The base component can also be referred to as the support component. The base component is preferably formed in one piece. More preferably, the base component is monolithic. The first plastic is preferably a thermoplastic. The first plastic preferably comprises polyamide (PA) and / or polypropylene (PP) and / or polypropylene terephthalate (PPT).

[0031] The longitudinal recess extends through the protective element. Consequently, the longitudinal recess can also be referred to as a longitudinal section. Preferably, the protective element is curved in the area adjacent to the longitudinal recess and extends towards the outside of the battery housing component.

[0032] The protective element can also be referred to as a reinforcing element. The protective element is formed in one piece. Preferably, the protective element is monolithic. The second plastic is preferably a thermoplastic. The second plastic preferably comprises polyamide (PA) and / or polypropylene (PP) and / or polypropylene terephthalate (PPT).

[0033] The second plastic can also be a thermosetting plastic or be made from a thermosetting plastic.

[0034] Preferably, the battery housing component is designed such that it has at least one protective plate which comprises the second plastic and is connected on the outside of the battery housing component to the base component arranged in the longitudinal recess. The battery housing component designed accordingly exhibits further improved stiffness.

[0035] Preferably, the battery housing component is designed such that the inside of the battery housing component, which is formed by the protective element, can be at least indirectly connected to a battery cell and / or to a battery module.

[0036] Preferably, the battery housing component is designed such that the battery housing component has a connecting flange arranged at the edge.

[0037] Preferably, the battery housing component is designed such that the protective element is materially bonded to the base component.

[0038] The appropriately designed battery housing component exhibits further improved mechanical stability.

[0039] The protective element is preferably bonded to the base component by welding. More preferably, the protective element is bonded to the base component by being arranged in an injection mold and being surrounded by the liquid first plastic of the base component, so that the first plastic of the base component at least partially melts the second plastic of the protective element.

[0040] Preferably, the material-bonded connection of the protective element to the base component is achieved by bonding the base component to the protective element. The same applies when a protective plate as described above is provided. This plate can be welded and / or bonded to the base component.

[0041] Preferably, the battery housing component is designed such that the protective element is fiber-reinforced, preferably continuous fiber-reinforced, and / or that the base component is fiber-reinforced, preferably short fiber-reinforced and / or long fiber-reinforced.

[0042] In the appropriately designed base component, the fiber material is arranged in a matrix material formed by the first plastic. The fiber material preferably comprises glass fibers and / or amide fibers and / or carbon fibers.

[0043] In the appropriately designed protective element, the fiber material is arranged in a matrix material formed by the second plastic. The fiber material preferably comprises glass fibers and / or amide fibers and / or carbon fibers.

[0044] The appropriately designed battery housing component exhibits further improved mechanical stability. Furthermore, the appropriately designed battery housing component offers improved protection and improved mechanical stability under thermal stress. This is because a fiber-reinforced, and especially a continuous fiber-reinforced, protective element essentially retains its mechanical stability even when the matrix material (e.g., . a thermoplastic polymer (as described above) in which the fiber material is embedded, softens or even liquefies due to the application of heat.

[0045] The fiber material of the protective element and / or the protective plate and / or the base component can be designed as a woven structure. Furthermore, the fiber material can be designed as a cross-ply. Additionally, the fiber material can be designed with unidirectionally arranged fibers in different orientations.

[0046] In the base component, the weight fraction of the fiber material is preferably between 5% and 70%, more preferably between 10% and 65%, more preferably between 20% and 60%, more preferably between 30% and 50%, and more preferably 45%. In the protective element and / or the protective plate, the weight fraction of the fiber material is preferably between 5% and 80%, more preferably between 10% and 75%, more preferably between 20% and 70%, more preferably between 30% and 60%, and more preferably 60% or 80%.

[0047] The protective element and / or the protective plate is preferably designed as an organosheet or as a cross-ply.

[0048] Furthermore preferably, the battery housing component is designed such that the inside of the battery housing component, which is formed by the second area of ​​the protective element, is designed to be at least indirectly connected to a battery cell and / or to a battery module.

[0049] The indirect connection between the battery cell or battery module and the inside of the battery housing component can be achieved, for example, by placing a cooling element between the inside of the battery housing component and the battery cell or battery module. Furthermore, thermal paste can be applied between the cooling element and the inside of the battery housing component. Additionally, thermal paste can be applied between the cooling element and the battery cells and / or battery modules.

[0050] Preferably, the battery housing component is designed such that the base component has reinforcing elements.

[0051] The appropriately designed battery housing component exhibits further improved rigidity, while the weight of the battery housing component is reduced.

[0052] The reinforcing elements can have reinforcing ribs and / or reinforcing honeycomb structures. In the latter case, the reinforcing elements have a honeycomb structure.

[0053] The reinforcing elements are preferably monolithic with the base component.

[0054] Preferably, the battery housing component is designed such that the reinforcing elements are formed on the inside of the battery housing component and / or on the outside of the battery housing component.

[0055] Preferably, the battery housing component is designed such that the battery housing component has at least one fastening element which is formed integrally in the base component.

[0056] A suitably designed battery housing component simplifies the attachment of battery cells and / or battery modules to the battery housing component. Furthermore, it simplifies connection to another battery housing component, such as a battery housing cover.

[0057] Preferably, the at least one fastening element is formed on the inside of the battery housing component. More preferably, the at least one fastening element is arranged between two adjacent second regions of the protective element, which enclose a first region. However, it is also possible for the at least one fastening element to be formed on the outside of the battery housing component.

[0058] The at least one fastening element is preferably designed as a bushing, preferably as a screw-on bushing. More preferably, the at least one fastening element is designed as a fastening pin and / or as a centering pin. The fastening pin is preferably designed to taper conically towards its free end.

[0059] Preferably, the battery housing component is designed such that it serves as underbody protection.

[0060] Preferably, the battery housing component is designed such that the battery housing component is designed as a battery housing shell and at least partially defines a receiving volume that is designed to receive battery cells and / or battery modules.

[0061] The battery housing component can preferably be designed as underbody protection and as a battery housing shell. In this case, the battery housing shell also serves as underbody protection.

[0062] The battery housing shell preferably has a circumferential boundary wall. The protective element preferably extends into the boundary wall, such that the protective element is arranged on a side of the boundary wall facing the receiving volume of the battery housing shell. The base component preferably extends into the boundary wall, such that the base component is arranged on a side of the boundary wall facing away from the receiving volume of the battery housing shell.

[0063] The problem underlying the present invention is further solved by a battery housing for receiving battery cells and / or battery modules, wherein the battery housing comprises a battery housing component as described above.

[0064] The problem underlying the present invention is further solved by a traction battery for a motor vehicle, which has at least one battery cell and / or at least one battery module and a battery housing as described above, wherein the at least one battery cell and / or the at least one battery module is / are arranged in the battery housing.

[0065] Furthermore, the problem underlying the present invention is solved by a motor vehicle, in particular an electric motor vehicle with a traction battery described above.

[0066] The problem underlying the present invention is further solved by a method for manufacturing a battery housing component described above by injection molding, wherein the method comprises the following process steps: Providing an injection mold with a first injection mold half and a second injection mold half; providing a protective element comprising a second plastic, which has at least two longitudinal recesses; positioning and holding the protective element between the first and second injection mold halves in an open position; closing the injection mold; injecting a first plastic, which forms the base component, into the injection mold in the closed position, so that the first plastic flows around the protective element in such a way that at least one longitudinal recess of the protective element is closed by the base component; opening the injection mold and removing the battery housing component.

[0067] This method according to the invention has the advantage that the battery housing component can be manufactured using tooling.

[0068] Preferably, the method includes a process step of forming the protective element, such that a first area of ​​the protective element, which is arranged between the at least two longitudinal recesses, is offset vertically with respect to at least a second area, so that the first area of ​​the protective element forms part of an outer surface of the battery housing component to be manufactured and the second area of ​​the protective element forms part of an inner surface of the battery housing component;

[0069] Preferably, the protective element is formed during the closing process of the injection mold, whereby the first area of ​​the protective element, which is arranged between the at least two longitudinal recesses, is offset vertically relative to at least a second area, so that the first area of ​​the protective element forms part of an outer surface of the battery housing component to be manufactured and the second area of ​​the protective element forms part of an inner surface of the battery housing component. This forming process preferably takes place by means of the closing movement of the injection mold.

[0070] Preferably, the protective element is preheated before being positioned between the injection mold halves. A suitable process improves the welding of the protective element to the base component.

[0071] Furthermore, the problem underlying the present invention is solved by a method for manufacturing a battery housing component described above by means of flow pressing, wherein the method comprises the following process steps: Providing a die and punch for an extrusion tool; placing at least one protective element, which has at least two longitudinal recesses, and at least one plastic part comprising a first plastic, in the die of the extrusion tool in the open position; closing the extrusion tool and forming the protective element such that the punch of the extrusion tool comes into contact with the at least one plastic part and the plastic part is formed by applying pressure with the punch such that the plastic part flows around the protective element in such a way that at least one longitudinal recess of the protective element is closed by the plastic part forming the base component; and opening the extrusion tool and removing the battery housing component.

[0072] This method according to the invention has the advantage that the battery housing component can be manufactured using tooling.

[0073] Preferably, the method includes a process step of forming the protective element, such that a first area of ​​the protective element, which is arranged between the at least two longitudinal recesses, is offset vertically with respect to at least a second area, so that the first area of ​​the protective element forms part of an outer surface of the battery housing component to be manufactured and the second area of ​​the protective element forms part of an inner surface of the battery housing component.

[0074] Preferably, the protective element is preheated before being placed in the die. A suitable process improves the welding of the protective element to the base component.

[0075] Further advantages, details and features of the invention will become apparent from the exemplary embodiments described below.

[0076] Specifically, they show: Figure 1: a perspective view of a battery housing component according to a first embodiment of the present invention; Figure 2: a perspective view of a battery housing component according to a second embodiment of the present invention; Figure 3: a perspective view of a battery housing component according to a third embodiment of the present invention; Figure 4: a perspective view of a protective element of the Figure 3 Figure 5A: a perspective sectional view of the battery housing component according to the first, second and third embodiments of the present invention; Figure 5B: a side sectional view of the battery housing component shown in Figure 5A; Figure 5A: a perspective sectional view of the battery housing component according to the invention according to the first, second and third embodiments of the present invention; Figure 5B: a side sectional view of the battery housing component shown in Figure 5A; Figure 5A: a perspective sectional view of the battery housing component shown in Figure 5A ...A: a perspective sectional view of the battery housing component shown in Figure 5A; Figure 5 Figure 5Aillustrated battery housing component; and Figure 6: a perspective sectional view of a battery housing component according to a fourth embodiment of the present invention.

[0077] In the following description, identical reference numerals denote identical components or identical features, so that a description of a component in relation to one figure also applies to the other figures, thus avoiding repetitive descriptions. Furthermore, individual features described in connection with one embodiment can also be used separately in other embodiments.

[0078] Figure 1 Figure 1 shows a perspective view of a battery housing component 10 according to a first embodiment of the present invention. The battery housing component 10 is in Figure 5A in perspective section view and in Figure 5Bshown in a lateral sectional view.

[0079] The in Figure 1 The battery housing component 10 shown is designed as a battery housing shell 10 for receiving battery cells and / or battery modules not shown in the figures. The battery cells and / or battery modules are accommodated in a receiving volume 14 of the battery housing component 10, the receiving volume 14 being partially bounded by an inner surface 11 and a circumferential side wall 13 of the battery housing component 10. The battery housing component 10 has a connecting flange 15 arranged at its edge. Furthermore, the battery housing component 10 has a plurality of fastening structures 16 by means of which the battery housing component 10 can be attached, for example, to a vehicle, or by means of which further components can be attached to the battery housing component 10.

[0080] The battery housing component 10 has a base component 20, which comprises a first plastic. The base component, which can also be referred to as the support component 20, is formed in one piece, more precisely monolithically, in the illustrated embodiments.

[0081] The battery housing component 10 further comprises a protective element 30, which includes a second plastic component. The protective element 30, which can also be referred to as a reinforcing element 30, is formed in one piece, more precisely monolithically. The protective element 30 has at least two longitudinal recesses 33, each of which extends through the protective element 30. A first region 31 of the protective element 30, located between the two longitudinal recesses 33, is offset vertically from two second regions 32 such that the first region 31 of the protective element 30 forms part of an outer surface 12 of the battery housing component 10, and the second regions 32 of the protective element 30 form part of the inner surface 11 of the battery housing component 30. The protective element 30 is connected to the base component 20 such that the longitudinal recesses 33 of the protective element 30 are closed by the base component 20.

[0082] The battery housing component 10 is designed such that, in a top view of the protective element 30, i.e., in a viewing direction parallel to the normal vector of the second region 32, the protective element 30 is continuous. This means that the first region 31 and the second regions 32 completely cover the projection surface of the battery housing component 10.

[0083] The battery housing component 10 has a quasi-sandwich construction. The first area 31 of the protective element 30 and the second areas 32 of the protective element 30 surrounding this first area 31 have different height levels.

[0084] The first area 31 and the surrounding second areas 32 of the protective element 30 are part of the one-piece protective element 30, and the first area 31 is in contact with the surrounding second areas 32 by means of the base component 20.

[0085] As can be seen particularly from the Figures 5A and 5B As can be seen, the base component 20 rests on one of the first connecting surfaces 31-1 of the first area 31 of the protective element 30, which faces the inner side 11 of the battery housing component 10. Furthermore, the base component 20 rests on one of the second connecting surfaces 32-2 of the second areas 32 of the protective element 30, which faces the outer side 12 of the battery housing component 10.

[0086] In the illustrated embodiments, the base component 20 is materially bonded to the first connecting surface 31-1 of the first region 31, which faces the inner side 11 of the battery housing component 10. Furthermore, the base component 20 is materially bonded to the second connecting surface 32-2 of the second region 32 of the protective element 30, which faces the outer side 12 of the battery housing component 10.

[0087] All figures also show that the base component 20 has reinforcing elements 21. The reinforcing elements 20 are designed in the form of intersecting reinforcing ribs, which, due to their arrangement, form a honeycomb structure. The reinforcing elements 21 are formed on the inner side 11 of the battery housing component 10 and on the outer side 12 of the battery housing component 10.

[0088] Furthermore, it can be seen from all the figures that the battery housing component 10 has fastening elements 22, 23 which are formed integrally in the base component 20.

[0089] The fastening elements 22, 23 are formed on the inner surface 11 of the battery housing component 10. The fastening elements 22, 23 are arranged between two adjacent second areas 32 of the protective element 30, which surround the first area 31.

[0090] Part of the fastening elements 22 is designed as a bushing 22, preferably as a screw-on bushing 22. Another part of the fastening elements 23 is designed as a fastening pin 23 or as a centering pin. The fastening pins are each designed to taper conically towards their free ends.

[0091] Figure 2 Figure 1 shows a perspective view of a battery housing component 10 according to a second embodiment of the present invention. The battery housing component 10 according to the second embodiment differs from the one shown in Figure 1. Figure 1 The battery housing component 10 shown differs only in that the battery housing component 10 according to the second embodiment has a larger extent and more first areas 31 and surrounding second areas 32.

[0092] Out of Figure 2It is evident that the battery housing component 10 is designed such that the protective element 30 has an integer multiple of two longitudinal recesses 33, i.e., for example, two, four, six, etc. longitudinal recesses. In the illustrated embodiment, the protective element 30 has six longitudinal recesses 33 (corresponding to three times two longitudinal recesses 33). Between each pair of directly adjacent longitudinal recesses 33, a first region 31 of the protective element 30 is formed, which is bounded or enclosed by two second regions 32, each of the first regions 31 being offset vertically with respect to the two second regions 32, so that the respective first regions 31 of the protective element 30 form part of the outer surface 12 of the battery housing component 10 and the second regions 32 of the protective element 30 form part of the inner surface 11 of the battery housing component 10.

[0093] The remaining structure of the battery housing component 10 according to the second embodiment is identical to the structure of the battery housing component 10 according to the first embodiment, so that with regard to the further structure reference is made to the above description of the battery housing component 10 according to the first embodiment in order to avoid repetition.

[0094] Figure 3 shows a perspective view of a battery housing component 10 according to a third embodiment of the present invention. Figure 4 shows a perspective view of the protective element 30 of the in Figure 3 The battery housing component 10 shown is in isolation.

[0095] The battery housing component 10 according to the third embodiment differs from the battery housing component 10 according to the first and second embodiments in that the third embodiment does not have a circumferential side wall 13. The battery housing component 10 according to the third embodiment can be used as underbody protection 10.

[0096] At the in Figure 4 The stepped construction of the protective element 30, shown in isolation, is clearly visible.

[0097] The remaining structure of the battery housing component 10 according to the third embodiment is identical to the structure of the battery housing component 10 according to the first embodiment, so that with regard to the further structure reference is made to the above description of the battery housing component 10 according to the first embodiment in order to avoid repetition.

[0098] Figure 6shows a perspective sectional view of a battery housing component 10 according to a fourth embodiment of the present invention.

[0099] The battery housing component 10 according to the fourth embodiment has a base component 20, which comprises a first plastic. The battery housing component 10 further has a one-piece protective element 30, which comprises a second plastic. The protective element 30 has at least one longitudinal recess 34. The protective element 30 is connected to the base component 20 such that the longitudinal recess 34 of the protective element 30 is closed by the base component 20. The protective element 30 forms part of the inner surface 11 of the battery housing component 10, and the area of ​​the base component 20 that closes the longitudinal recess 34 of the protective element 30 forms the remaining part of the inner surface 11 of the battery housing component 10.

[0100] The in Figure 6The illustrated battery housing component 10 has at least one protective plate 40, which has the second plastic and is connected on the outside 12 of the battery housing component 10 to the base component 20 arranged in the longitudinal recess 34.

[0101] Wall sections 35 of the protective element 30, which adjoin the longitudinal recess 34, are curved towards the outer surface 12 of the battery housing component 10. Opposing areas of the protective element 30 adjacent to the longitudinal recess 34 are connected to each other by connecting webs 36.

[0102] The remaining structure of the battery housing component 10 according to the fourth embodiment is identical to the structure of the battery housing component 10 according to the first embodiment, so that with regard to the further structure reference is made to the above description of the battery housing component 10 according to the first embodiment in order to avoid repetition. Reference symbol list

[0103] 10 Battery housing component 11 Inner side (of the battery housing component) 12 Outer side (of the battery housing component) 13 Side wall (of the battery housing component) 14 Receptacle volume (of the battery housing component) 15 Connecting flange (of the battery housing component) 16 Mounting structure 20 Base component (of the battery housing component) 21 Reinforcing element (of the base component) 22 Mounting element / Screw-on bushing (of the base component) 23 Mounting element / Mounting pin / Centering pin / Positioning pin (of the base component) 30 Protective element (of the battery housing component) 31 First area (of the protective element) 31-1 First connecting surface (of the first area) 32 Second area (of the protective element) 32-2 Second connecting surface (of the second area) 33 Longitudinal recess 34 Longitudinal recess 35 Wall section (of the protective element) 36 Connecting bridge (of the protective element) 40 Protective plate

Claims

1. Battery housing component (10) for a traction battery, wherein the battery housing component (10) has the following features: - the battery housing component (10) has a base component (20) comprising a first plastics material; - the battery housing component (10) has at least one integrally formed protective element (30) comprising a second plastics material; - the protective element (30) has at least two longitudinal recesses (33); - a first region (31) of the protective element (30), which is arranged between the at least two longitudinal recesses (33), is offset in height with respect to at least one second region (32) such that the first region (31) of the protective element (30) forms part of an outer side (12) of the battery housing component (10) and the second region (32) of the protective element (30) forms part of an inner side (11) of the battery housing component (10); - the protective element (30) is connected to the base component (20) such that at least one longitudinal recess (33) of the protective element (30) is sealed by the base component (20).

2. Battery housing component (10) according to claim 1, characterized in that the base component (20) - lies on a first connecting surface (31-1) of the first region (31) of the protective element (30) which faces the inner side (11) of the battery housing component (10) and / or - lies on a second connecting surface (32-2) of the at least one second region (32) of the protective element (30) which faces the outer side (12) of the battery housing component (10).

3. Battery housing component (10) for a traction battery, wherein the battery housing component (10) has the following features: - the battery housing component (10) has a base component (20) comprising a first plastics material; - the battery housing component (10) has at least one integrally formed protective element (30) comprising a second plastics material; - the protective element (30) has at least one longitudinal recess (34); - the protective element (30) is connected to the base component (20) such that - the longitudinal recess (34) of the protective element (30) is sealed by the base component (20), and - the protective element (30) forms part of an inner side (11) of the battery housing component (10), and - the region of the base component (20) which seals the longitudinal recess (34) of the protective element (30) forms the remaining part of the inner side (11) of the battery housing component (10).

4. Battery housing component (10) according to any of the preceding claims, characterized in that the protective element (30) is integrally bonded to the base component (20).

5. Battery housing component (10) according to any of the preceding claims, characterized in that the protective element (30) is fiber-reinforced, preferably reinforced with continuous fibers, and / or in that the base component (20) is fiber-reinforced, preferably reinforced with short fibers and / or reinforced with long fibers.

6. Battery housing component (10) according to any of claims 1, 2, 4 or 5, characterized in that the inner side (11) of the battery housing component (10), which is formed by the second region (32) of the protective element (30), is designed to be at least indirectly connected to a battery cell and / or to a battery module.

7. Battery housing component (10) according to any of the preceding claims, characterized in that the base component (20) has reinforcing elements (21).

8. Battery housing component (10) according to claim 7, characterized in that the reinforcing elements (21) are formed on the inner side (11) of the battery housing component (10) and / or on the outer side (12) of the battery housing component (10).

9. Battery housing component (10) according to any of the preceding claims, characterized in that the battery housing component (10) has at least one fastening element (22, 23) which is formed integrally in the base component (20).

10. Battery housing component (10) according to any of the preceding claims, characterized in that the battery housing component (10) is designed as an underbody protection means (10).

11. Battery housing component (10) according to any of the preceding claims, characterized in that the battery housing component (10) is formed as a battery housing shell (10) and at least partially delimits a receiving volume (14) which is designed to receive battery cells and / or battery modules.

12. Battery housing for receiving battery cells and / or battery modules, comprising a battery housing component (10) according to any of the preceding claims.

13. Traction battery for a motor vehicle, having at least one battery cell and / or at least one battery module and a battery housing according to claim 12, wherein the at least one battery cell and / or the at least one battery module is / are arranged in the battery housing.

14. Motor vehicle, in particular an electric motor vehicle comprising a traction battery according to claim 13.

15. Method for producing a battery housing component (10) according to any of claims 1, 2 or 4 to 11 by injection molding, comprising the following method steps: - providing an injection mold having a first injection mold half and a second injection mold half; - providing a protective element (30) which has at least two longitudinal recesses (33) and comprises a second plastics material; - positioning and holding the protective element (30) between the first and second injection mold halves which are in an open position; - closing the injection mold; - injecting a first plastics material, which forms the base component (20), into the injection mold which is in the closed position so that the first plastics material flows around the protective element (30) such that at least one longitudinal recess (33) of the protective element (30) is sealed by the base component (20); - opening the injection mold and removing the battery housing component (10).

16. Method for producing a battery housing component (10) according to any of claims 1, 2 or 4 to 11 by extrusion, comprising the following method steps: - providing an extrusion tool comprising a die and a punch; - placing at least one protective element (30), which has at least two longitudinal recesses (33), and at least one plasticized melt comprising a first plastics material in the die of the extrusion tool which is in the open position; - closing the extrusion tool such that the punch of the extrusion tool comes into contact with the at least one plasticized melt and the plasticized melt is deformed by applying pressure by means of the punch such that the plasticized melt flows around the protective element (30) such that at least one longitudinal recess (33) of the protective element (30) is sealed by the plasticized melt which forms the base component (20); and - opening the extrusion tool and removing the battery housing component (10).