WO2021214252A1

WO2021214252A1 - Method for producing a battery housing component, battery housing component and battery housing having a shielding

Info

Publication number: WO2021214252A1
Application number: PCT/EP2021/060584
Authority: WO
Inventors: Stefan Lenz; Axel Wagner; Georg Enkirch
Original assignee: Kautex Textron Gmbh & Co. Kg
Priority date: 2020-04-23
Filing date: 2021-04-22
Publication date: 2021-10-28
Also published as: DE102020111062A1

Abstract

The invention relates to a method for producing a battery housing component (2, 3) for a battery housing (1), in particular for a battery housing (1) of a traction battery of an electrically driveable vehicle, comprising the following steps: producing a main body (4) made of a plastic material; attaching at least one flat shielding element (7) to a shield side (6) of the main body (4); and applying an electrically conductive coating (13) to the shield side (6) of the main body (4) in at least one shielding region (12), wherein the at least one flat shielding element (7) and the electrically conductive coating (13) are connected in the at least one shielding region (12) to form an electrically conductive shielding (5) on the shield side (6) of the main body (4). The invention also relates to a corresponding battery housing component (2, 3) for a battery housing (1), as well as a battery housing (1) comprising two battery housing components (2, 3) of this type, wherein the two battery housing components (2, 3) are/can be connected to one another forming an enclosed receiving space (11) for receiving a plurality of electrical battery cells, and contacting their shieldings (5).

Description

Method for producing a battery housing component, battery housing component and battery housing with a shield

The present invention relates to a method for producing a battery housing component for a battery housing, in particular special for a battery housing of a traction battery of an electrically drivable vehicle.

The present invention also relates to a Batteriegehäusebau part for a battery housing, in particular for a Batteriege housing a traction battery of an electrically drivable vehicle, with a base body made of a plastic material and an electrically conductive shield, which is arranged on a shield side of the base body.

The present invention also relates to a Batteriege housing, in particular for a traction battery of an electrically drivable vehicle, with two of the above Batteriegehäusebautei sources.

In the prior art it is known that battery housings for traction batteries or drive batteries of electric vehicles usually have at least two interconnected battery housing components which together form the battery housing. Be known battery housing components are usually made of metallic materials, mostly aluminum or steel. These battery housing components or battery housings enable the surroundings of the battery housing component to be effectively shielded from electromagnetic radiation

Traction battery and also an effective shielding of the traction tion battery from electromagnetic radiation that comes from radiation sources in the vicinity of the traction battery, for example from the vehicle. These battery housing components and battery housings made of metallic materials are usually very heavy.

A battery housing component for a battery housing of a traction battery of an electric vehicle and a method for producing such a battery housing component are known from the prior art, for example from EP 2742 549 B1. The battery housing component has a receiving body in which the traction battery can be received, and at least one flat element made of an electrically conductive material, the receiving body being at least partially or entirely made of a thermoplastic or thermosetting plastic material. The flat element is provided for shielding a surrounding area of the battery housing component and / or for shielding the traction battery from electromagnetic radiation. The flat element can be a metal foil or a fleece and / or fabric and / or polymeric foam material made of conductive or conductive coated material. Alternatively, the flat element can be designed in the form of a layer which rests flat on the receiving body and is connected to the receiving body in a materially bonded manner. The layer can be applied by means of a sputtering process, painting process and / or vapor deposition process as well as by means of a galvanic process.

As a result, compared to battery housing components and battery housings made from metallic materials, a weight reduction can be achieved without having to forego shielding the traction battery from electromagnetic radiation. However, in practice it has proven to be difficult and / or costly to connect the flat element to the receiving body or to attach it to it. This can be dependent on a shape of the receiving body. In particular, when the receiving body is designed with a complex shape, it can be difficult to attach a flat element in the form of a metal foil, a fleece, a woven fabric or a polymeric foam material to it. For example, the planar element can form folds on the receiving body. The shielding can also be impaired by the difficult attachment of the flat element to the receiving body, and the attachment of the flat element is prone to errors overall. In addition, a visually inferior impression of the battery housing component can result. The application of the flat element on the receiving body in the form of a layer is usually associated with significantly increased costs. In addition, applying the flat element to the receiving body in the form of a layer is time-consuming. Based on this, the object of the present invention is to provide a method for producing a battery housing component for a battery housing, in particular for a battery housing of a traction battery of an electrically drivable vehicle, a battery housing component for a battery housing and a battery housing produced therewith, which enable the production of battery housing components and battery housings that are inexpensive to manufacture and have good properties with regard to electromagnetic shielding. The object on which the present invention is based is achieved by a method for producing a battery housing component for a battery housing, in particular for a battery housing of a traction battery of an electrically drivable vehicle, solved with the features of claim 1. Advantageous designs of the method are described in claims 2 to 9 which are dependent on claim 1.

More precisely, the object on which the present invention is based is achieved by a method for producing a battery housing component for a battery housing, in particular for a battery housing of a traction battery of an electrically drivable vehicle. The method comprises the steps of producing a base body from a plastic material, attaching at least one flat shielding element to a shield side of the base body, and applying an electrically conductive coating to the shield side of the base body in at least one shielding area, the at least one flat shielding element and the electrical conductive coating in which at least one shielding area are connected to an electrically conductive shield on the shield side of the base body.

The object on which the present invention is based is also achieved by a battery housing component for a battery housing, in particular for a battery housing of a traction battery of an electrically drivable vehicle, with the features of claim 10. Advantageous configurations of the battery housing component are described in the claims 11 to 21 which are dependent on claim 10.

In more detail, the underlying task of the present invention is also solved by a battery housing component for a battery housing, in particular for a battery housing of a traction battery of an electrically drivable vehicle, with a base body made of a plastic material and an electrically conductive shield on one side of the screen of the base body is arranged. The battery housing component according to the invention is characterized in that the electrically conductive shielding has at least one flat shielding element which is attached to the shielding side of the base body, the electrically conductive shielding has at least one shielding area in which an electrically conductive coating on the shielding side of the base body is applied, and the at least one flat shielding element and the electrically conductive coating in the at least one shielding area are connected to the electrically conductive shield.

The object on which the present invention is based is also achieved by a battery housing having the features of claim 22. An advantageous embodiment of the battery housing is described in claim 23 which is dependent on claim 22.

In more detail, the underlying task of the present invention is also achieved by a battery housing, in particular for a traction battery of an electrically drivable vehicle, with two of the above battery housing components. The battery housing according to the invention is characterized in that the two battery housing components are connected to one another or can be connected to one another, forming an enclosed receiving space for receiving a plurality of electrical battery cells and making contact with their shields.

According to the invention, there is thus a coherent shielding of the corresponding battery housing component with at least one flat shielding element and an electrically conductive coating in at least one shielding area. The at least one flat shielding element can be attached simply and efficiently. In the at least one shielding area, the shielding is done by the electrically conductive coating. forms what a production of the coating on in principle arbitrarily shaped shielding areas, even with complex shapes, it is possible. In this way, for example, correspondingly complex blanks of flat shielding elements for adapting to the shape of the base body in the area of the at least one shielding area can be dispensed with. This means that there is no overall risk of the at least one flat shielding element forming creases if the flat shielding element is only used where it can be applied simply and flatly, while otherwise the electrically conductive coating is applied, the flat shielding elements not being completely must be flat, but can also have a shape for adaptation to simple bends and / or unevenness of the base body or flexibility for adaptation to simple bends and / or unevenness of the base body. As a result, the shield can be attached in an overall visually appealing manner with the at least one flat shielding element in combination with the electrically conductive coating, with a reliable shielding effect of the shield being ensured at the same time. The basic housing as a whole can in principle have any 3D shape with bends and curves in different bending radii as well as with kinks and other hard transitions, especially in flange areas for connecting battery housing components to form a closed battery housing. Since the application of the electrically conductive coating can be restricted to the at least one shielding area, additional costs, in particular due to additional coating material, and additional effort for applying the electrically conductive coating can also be limited.

The method according to the invention enables a 3D shielding to be produced on a correspondingly shaped 3D base body With any shape in principle, which both ensures reliable shielding of the traction battery and at the same time creates a high-quality appearance.

In the above-mentioned process, individual process steps can be exchanged in their sequence. In particular, the individual method steps can be carried out in different sequences depending on their type. In principle, several process steps can also be carried out at the same time. Several process steps can be carried out not only simultaneously, but also integrally, i.e. when one of the process steps is carried out, a further process step is automatically carried out.

The shield side of the base body is an outside or an inside with respect to the battery housing. The inside faces a receiving space for battery cells of the traction battery, while the outside faces away from it. In principle, this is irrelevant for the shielding effect of the electrically conductive shield, as long as a continuous shielding is formed with the at least one flat shielding element and the electrically conductive coating in the at least one shielding area. The shield side can be different for different battery housing components, even if they are verbun to form a battery housing. For example, in the case of a battery housing with two battery housing components, the shield side can be the inside in one of the battery housing components and the shield side can be the outside in the other battery housing component. Each battery housing component can also have two shield sides, wherein the battery housing component can have a shield according to the invention on the shield sides. Alternatively, only one of the two sides of the shield is designed with a shield according to the invention, while only a flat shielding element or an electrically conductive one is attached to the other side of the shield in a conventional manner Coating is applied. If the outside of the Grundkör pers is the shield side, no additional electrically conductive parts are introduced into the receiving space by the battery housing components. This increases operational safety, especially in the event of an accident. If, however, the inside of the base body is the shield side, components located in the battery housing can be connected to a corresponding connection of the shield to a vehicle ground in order to establish a simple and inexpensive ground connection of these components.

The shield is preferably formed over the entire surface of the shield side in order to form a reliable shield against electromagnetic radiation. Full area means that continuous electromagnetic shielding is achieved. This can include, for example, that the at least one flat shielding element has holes, for example when configured as a grid. Depending on the desired electromagnetic (EM) shielding properties, the shielding can be dimensioned as a whole, for example in relation to its

Thickness and type of flat shielding element used.

The battery housing components of the battery housing can be designed, for example, as a tub component and a cover component, which can be connected to form the battery housing. Alternatively, the battery housing components of the Batteriege housing can be designed, for example, as a base plate and a cover component, which can be connected to form the battery housing. The battery housing components of the battery housing can also be designed as half-shells of any shape.

Various plastic materials can be used to manufacture the base body. To increase the strength of the Battery housing components, a fiber-reinforced Kunststoffma material can be used. The base body can also be made from an organic sheet.

The shield side of the battery housing component preferably comprises a flange area for connection to a corresponding battery housing component, so that when the two battery housing components are connected, a battery housing with preferably complete shielding is formed. The flange area can be connected to a flange area of the corresponding battery housing component, or it can be placed on a flat area of the corresponding battery housing component, for example on a flat area of a base plate. Preferably, the shielding of the two Batteriege housing components extends into the flange area in such a way that a circumferential shielding of the battery housing is automatically formed when the two battery housing components are connected. The flange area preferably comprises a substantially flat contact surface as a contact surface for connection to the corresponding battery housing component. The shield is preferably also formed on the contact surface. Alternatively or additionally, the contact can be made separately, for example via a separate electrical conductor that is connected to the shields of the two battery housing components.

The battery housing component can form the battery housing. Usually, however, the battery housing is formed by connecting several battery housing components to one another. The individual battery housing components are preferably produced by the same method, but can have different shapes. In an alternative battery housing with two battery housing components, only one of the two battery housing components is Herge according to the method described above, while the other battery housing component consists of one metallic material. In a further alternative battery housing with two battery housing components, only one of the two battery housing components is produced according to the method described above, and the other battery housing component has an electrically conductive shield, which is provided by attaching a flat shielding element to a shield side of the base body. In particular in the case of a battery housing component with an essentially plate shape, such as, for example, an essentially flat cover component or a flat base plate as a battery housing component, this enables efficient and cost-effective production. In yet another alternative embodiment of the battery housing, one of the two battery housing components is coated with an electrically conductive shield in a dipping process. For example, there is an all-round coating of the base body. Alternatively, an electrically conductive coating can be applied to the corresponding battery housing component on only one shield side of its base body.

The traction battery typically comprises a plurality of individual battery cells, which can be connected to one another in parallel and / or in series in various ways. The battery cells are arranged together in the receiving space.

The vehicle can only have an electric drive or an electric drive in addition to a further drive, in particular an internal combustion engine. Accordingly, the vehicle can be an electric vehicle or a so-called hybrid vehicle.

The production of a base body from a plastic material preferably comprises injection molding of the base body or production of the base body by molding a blank of the base body in a pressing process, in particular extrusion, in a corresponding form. Correspondingly, the plastic material can be poured or injected into a mold designed as an injection mold, for example, in order to produce the base body. Alternatively, the blank can be made available from the plastic material and shaped into the base body in a mold designed as a press mold. In this case, an extrusion process is preferably used, the plastic material first flowing into the mold and then the base body being formed by pressing in the mold. The methods mentioned allow the base body to be produced in any shape, so that the base body and thus the battery housing component as well as the battery housing as a whole can be easily adapted to use in any vehicle with individual free spaces for the traction battery.

Further preferably, attaching at least one flat shielding element to a shield side of the base body includes attaching the at least one flat shielding element to at least one flat area of the base body, and / or applying an electrically conductive coating to the shield side of the base body in at least one shielding area includes application the electrically conductive coating in at least one complex shape area. The at least one flat area of the base body enables the at least one flat shielding element to be attached easily. Blanks of the at least one flat shielding element can be omitted for the at least one flat area. There is no risk of wrinkles in the at least one flat shielding element in the area of the at least one flat area, so that the at least one flat shielding element can be attached in an optically appealing manner in the at least one flat area and a reliable shielding effect is ensured. The attachment of the at least one flat Shielding element can be carried out easily and inexpensively on the at least one flat area of the base body. The flat area is to be understood in such a way that the base body has an essentially flat shape. The base body can therefore be flat or planar in the flat area or have simple bends and / or unevenness, so that the at least one flat shielding element can easily be attached to it.

In the at least one complex shape area, the basic housing can in principle have any desired 3D shape with bends and curves in various arrangements and / or bend radii. The at least one complex shaped area thus corresponds to the at least one shielding area. The application of the electrically conductive coating can thus be limited to the at least one complex shape area, so that additional costs and additional effort for applying the electrically conductive coating are limited.

Further preferably, attaching at least one flat shielding element to a shield side of the base body includes attaching a metal foil, a metal sheet, a woven metal grid, a metal grid made from a metal sheet by punching, laser cutting or the like, a metal grid made from a metal sheet as expanded metal , a metal-coated fabric, a metal-coated grid or a metal-coated fleece. Combinations of the flat shielding elements mentioned are also possible, for example a metal foil which is partially designed in the manner of a grid. The metals used here can be, for example, aluminum, copper, iron, silver, tin, zinc, or other metals with good electrical conductivity, as well as any alloys based on one or more of the metals mentioned. In the case of the metallic coated fabric or the metallic coated fleece For example, individual fibers can be coated before the fabric or fleece is produced, or the fabric or fleece is coated in the finished state. The type and configuration, in particular a material thickness, of the at least one flat shielding element can be selected as a function of the desired EM properties. In the case of high-frequency shielding, a metal foil can be preferred over a flat shielding element with holes, for example a grid or fabric. Different types of flat shielding elements can also be attached together to a base body.

The flat shielding element can be designed, for example, like a plate. The flat shielding element can also be designed as a flexible, inherently movable shielding element. In this case, the flat shielding element can have at least a low degree of flexibility, as a result of which it can be adapted, for example, to arches of the base body. It is therefore not neces sary that the base body is completely planar or even in the area of attachment. For example, a metal sheet or a metal grid made from a metal sheet can be easily bent in order to be adapted to a corresponding shape of the base body. Other flat shielding elements such as the metal foil, the woven metal grid, the metal-coated fabric or the metal-coated fleece have a corresponding flexibility or mobility in themselves in order to adapt effectively to simple shapes of the base body.

The flat shielding element can be formed from a combination of several individual flat individual elements, for example a combination of several metal sheets that contact each other, or a metal fabric that has a central recess in which a metal sheet can be received. For example, a flat sheet metal without shaping can be used, while in a vicinity thereof a reliably fitting shielding for areas that are not completely flat can be formed by the metal fabric.

Further preferably, attaching at least one flat shielding element to a shield side of the base body includes applying an adhesive layer on a side of the at least one flat shielding element facing the shield side of the base body and / or applying an adhesive layer to the shield side of the base body and gluing the least a flat shielding element with the shielding side of the base body. The at least one flat shielding element can be reliably attached to the base body through the adhesive layer, so that reliable positioning of the at least one flat shielding element takes place in particular at the transition of the at least one flat shielding element to the electrically conductive coating. This is particularly advantageous in an area of overlap with the electrically conductive coating in order to achieve coherent shielding of the battery housing component and thus of the entire battery housing. The adhesive layer can be applied by applying a liquid adhesive layer using a spraying and / or painting method, for example with a brush or roller, or by applying an adhesive film. The adhesive layer can completely cover the at least one flat shielding element on its side facing the shielding side of the base body. Preferably, however, the adhesive layer only partially covers the at least one flat shielding element, for example in the edge regions thereof, in regularly spaced strips, or the like.

The attachment of at least one flat shielding element to a shield side of the base body further preferably comprises attaching at least one insert for holding the flat shielding element on the shield side of the base body. That Insert can, for example, be positioned together with the at least one flat shielding element in the corresponding shape before the base body is molded in order to fix the at least one flat shielding element in the molded state of the base body.

The method further preferably comprises introducing the at least one flat shielding element into a mold for shaping the base body, and the production of a base body from a plastic material comprises molding the base body in the mold, with at least one flat shielding element being attached to a shield side of the base body takes place integrally with the shaping of the base body in the mold. Depending on the type of at least one flat shielding element, this can be positioned in different ways on the formed base body. For example, the at least one flat shielding element can be partially fused or welded to the base body. The at least one flat shielding element can also be partially surrounded by the plastic material of the base body. The at least one flat shielding element can also have protrusions that extend into the plastic material of the base body and are held there in the molded state of the base body in the manner of an anchor. By partially masking the base body on its shielding side in the area of the at least one flat shielding element, a local connection of the base body with the at least one flat shielding element can be prevented, for example. In this way, for example, the ability to contact the at least one flat shielding element in the area of the masking can be increased locally, for example to be able to provide a connection for connection to a ground of the vehicle and / or an additional electrical connection to the electrically conductive coating in the at least to produce a shielding area. Further preferably, the introduction of the flat shielding element into a mold for forming the base body includes introducing the at least one flat shielding element with at least one hole, preferably a plurality of holes, in particular as a grid or fabric, into the mold. Due to its structure, the grid or fabric has a plurality of holes. When the base body is formed, a firm connection can thus be established between the at least one flat shielding element and the base body. The at least one hole is preferably made so small that the plastic material of the base body does not pass through it, even if the plastic material of the base body can at least partially enter the at least one hole, for example when the at least one flat shielding element is formed when the The base body is introduced into this form in a corresponding shape, and the plastic material of the base body is in a liquid or plastic state and extends into the at least one hole during molding and then hardens therein. The at least one hole preferably has a width of a few millimeters, for example three millimeters or less. The at least one hole can have any geometry, for example round or square. The dimensions of the at least one hole can be the same or different in different plane directions. The at least one hole is preferably arranged in an area of overlap with the electrically conductive coating, so that the electrically conductive coating in the area of the at least one hole can get onto the plastic material of the base body and is applied to it. As a result, the electrically conductive shielding as a whole is not interrupted and reliably produced even with larger holes in the at least one flat shielding element. Furthermore, the application of an electrically conductive coating on the shield side of the base body in at least one shielding area includes application of the electrically conductive coating by vapor deposition with metal vapor, in particular by a vacuum vapor deposition process with metal vapor, spraying with a liquid metal, in particular by an arc spray process with zinc A coating with an electrically conductive paint, in particular a solution of metal particles and / or carbon particles in a solvent, in particular a so-called copper paint. Corresponding methods are well suited for applying the electrically conductive coating to base bodies of any shape, so that reliable electrically conductive shielding can be produced. The electrically conductive coating can be applied to the base body in different thicknesses depending on a use and a desired shielding effect. The thickness can be increased, for example, by repeatedly applying the electrically conductive coating to the shield side of the base body in the at least one shield area. Different types of electrically conductive coatings can also be applied to a base body, for example in different shielding areas, or the electrically conductive coating can be produced jointly in at least one shielding area by a combination of several of the coating types mentioned.

The application of an electrically conductive coating on the shield side of the base body in at least one shielding area further preferably comprises applying the electrically conductive coating in an overlap area that overlaps the at least one flat shielding element. The application of the electrically conductive coating on the shield side of the base body is preferably carried out by arc spraying of zinc, whereby a reliable application of the electrically conductive coating on the shield side of the base body in at least one shielding area after the at least one flat shielding element has been attached. Correspondingly, the electrically conductive coating is applied in the overlap area on the at least one flat shielding element, so that it overlaps therewith. Due to the overlap of the at least one flat shielding element with the electrically conductive coating, the shielding is particularly reliably cohesive, so that good shielding of the entire battery housing or the corresponding battery housing component is formed. Holes in the electrically conductive shield can be reliably avoided. Further preferably, the base body has at least one flat area, and the at least one flat shielding element is attached to the at least one flat area, and / or the base body has at least one complex shaped area and the electrically conductive coating is at least one complex Formed area on the shield side of the base body in the at least one shielding area brought up. The at least one flat area of the base body enables the at least one flat shielding element to be attached easily. Blanks of the at least one flat shielding element can be omitted. There is no risk of the at least one flat shielding element wrinkling in the area of the at least one flat area, so that the at least one flat shielding element can be attached in an optically appealing manner and a reliable shielding effect is ensured. In this case, the at least one flat shielding element can be attached to the at least one flat area of the base body in a simple and cost-effective manner. In the at least one complex shape area, the basic housing can in principle have any desired 3D shape Have bends and curves in various arrangements and bend radii. The at least one complex shaped area here corresponds to the at least one shielding area, so that the application of the electrically conductive coating can be limited to the at least one complex shaped area. As a result, additional costs and additional effort for applying the electrically conductive coating are limited.

More preferably, the at least one flat shielding element is as a metal foil, as a metal sheet, as a woven metal grid, as a metal grid made from a metal sheet by punching, laser cutting or the like, as a metal grid made from a metal sheet as expanded metal, as a me-metallic coated fabric , designed as a metal-coated grid or as a metal-coated fleece. The metals used here can be, for example, aluminum, copper, iron, silver, tin, zinc, or other metals with good electrical conductivity, as well as any alloys based on one or more of the metals mentioned. In the case of the metal-coated fabric or the metal-coated non-woven fabric, individual fibers can be coated prior to the production of the fabric or the non-woven fabric, or the fabric or non-woven fabric is coated in the finished state. The battery housing component also preferably has an adhesive layer which is arranged between a side of the at least one flat shielding element facing the shield side of the base body and the shield side of the base body. The at least one flat shielding element can be reliably attached to the base body through the adhesive layer, so that the at least one flat shielding element is reliably positioned when the at least one flat shielding element transitions to the electrically conductive coating. This is particularly important in a nem overlapping area with the electrically conductive coating device advantageous in order to achieve a coherent shielding of the battery housing component and thus the entire battery housing. The adhesive layer can be formed by individual adhesive strips.

More preferably, the at least one flat shielding element is designed with at least one hole, preferably a plurality of holes, in particular as a grid or fabric, and the plastic material of the base body extends into the at least one hole of the at least one flat shielding element. Due to its structure, the grid or fabric has a plurality of holes. Due to the extension of the plastic material of the base body into the at least one hole, the at least one flat shielding element can be firmly attached to the base body. Preferably, the extension of the plastic material of the base body into the at least one hole is achieved in that the at least one flat shielding element is introduced into this shape when the base body is formed, and the plastic material of the base body is in a liquid or plastic To stand is and extends into the at least one hole during molding and then hardened therein. The at least one hole is preferably arranged in an area of overlap with the electrically conductive coating, so that the electrically conductive coating in the area of the at least one hole can get onto the plastic material of the base body and is applied to it. As a result, the electrically conductive shielding as a whole is not interrupted and reliably produced even in the case of larger holes in the at least one flat shielding element.

Further preferably, the electrically conductive coating on the shield side of the base body is in at least one shield area and the at least one flat shielding element executed overlapping in an overlap area. The overlap area is formed by a partial area of the at least one flat shielding element and a partial area of the electrically conductive coating. By overlapping the electrically conductive coating with the at least one flat shielding element, the shielding is reliably formed in a coherent manner, so that good shielding of the entire battery housing or the corresponding battery housing component is formed. Holes in the shield can be reliably avoided. In the overlapping area, the at least one flat shielding element is preferably attached directly to the base body, and the electrically conductive coating is applied to it. The electrically conductive coating thus partially overlaps, namely in the overlap area, the at least one flat shielding element. In principle, however, a reverse arrangement is also possible, please include the electrically conductive coating being applied directly to the base body and the at least one flat shielding element being attached over it. The at least one flat shielding element thus partially overlaps, namely in the overlap area, the electrically conductive coating.

More preferably, the at least one flat shielding element is an electrically conductive element of a battery cell arrangement with a plurality of electrical battery cells, in particular a cooling plate or a base plate of the battery cell arrangement. Preferably, the element of the battery cell arrangement is a substantially flat element. As a result, on the one hand, the shield can be formed inexpensively by additionally using the element already provided with the battery cell arrangement as part of the shield. In addition, this electrically conductive element is an electrical connection between the battery cell assembly and the shield formed. This can be used, for example, to provide a cost-effective and reliable ground connection for the battery cell arrangement. With a corresponding connection of the shield to a ground of the vehicle, a separate implementation of a ground connection through the battery housing can be omitted. The cooling plate can be arranged for example on an upper side of the battery cell arrangement to cool the battery cells contained. The base plate can be a structural element of the battery cell arrangement on which the contained battery cells are positioned and supported.

In principle, the statements also apply in reverse if the battery housing component has a corresponding flat shielding element which is used at the same time for the battery cell arrangement. As a result, for example, the battery cells can be supported directly on a support plate of a battery housing component designed accordingly as a lower shell.

The battery housing component also preferably has a flange area running around for connection to a corresponding battery housing component, and the shield extends over the flange area. The shield can stretch over the entire flange area or only part of it. The shield preferably extends circumferentially over the flange area in order to form a circumferential EM sealing surface, whereby the shield only has to extend over part of the flange area, in particular only over part of a width of the flange area. The flange areas come into contact with one another and form corresponding contact surfaces. The connection of the battery housing component with the corresponding battery housing component initially relates to establishing a mechanical connection in order to form a battery housing, whereby the through the At the same time, an electrical connection can be made by the shielding of the battery housing components making electrical contact in the flange area. The flange area preferably comprises an essentially flat contact surface as a contact surface for connection to the corresponding battery housing component. The flange area preferably also includes areas, in particular a rear area of the contact surface and a transition from this to a base body. Correspondingly, the flange area can in principle have any desired 3D shape with bends and curves in different bending radii as well as with kinks and other hard transitions.

The shielding area furthermore preferably comprises the circumferential flange area at least partially, and the shielding is formed in the flange area by applying the electrically conductive coating. Thus, in an interface area for connecting the battery housing component to a corresponding battery housing component, an interface shield can be formed that includes the flange area and also effects electrical contacting of the two battery housing components at the interface via a reliable mechanical connection of the two battery housing components. The shielding can thus be reliably provided in the flange area regardless of its shape. The flange areas are preferably designed with a flat contact surface as a contact surface for connection to the corresponding battery housing component, over which the shield extends at least partially.

The flange area also preferably has a substantially flat contact surface as a contact surface for connection to the corresponding battery housing component, and a circumferential groove is formed in the contact surface, a circumferential sealing element being received or receivable in the groove. The groove enables the sealing element to be received and positioned easily. The shield preferably extends at least partially over the contact surface, as a result of which electrical contact can automatically be made over the contact surface when connecting to the corresponding battery housing component. More preferably, the shield extends from the groove. As a result, an electrical connection can be made via the contact surface on a side of the contact surface that is on the inside with respect to the groove, ie one side of the contact surface facing a receiving space enclosed by the battery housing, or on a side of the contact surface that is on the outside of the groove Contacting take place. In particular, internal contact is advantageous because the electrical contact is protected from moisture and other environmental influences by the sealing element.

More preferably, the circumferential sealing element is designed as a liquid seal, the liquid seal being applied in particular to the electrically conductive coating. The liquid seal is easy to use and enables reliable sealing even on rough surfaces. In particular, the liquid seal can be used well on a metal surface formed by the electrically conductive coating.

Further preferably, the battery housing component has an electrical contact element which is connected to the shield in an electrically conductive manner. A connection between the battery housing component and vehicle ground can be established via the electrical contact element in order to establish equipotential bonding for the battery housing. The electrical contact element can be designed as a contact pin that is connected to the shield. The electrical contact element is preferably connected in the region of the at least one flat shielding element. orderly and thus electrically connected. If the Batteriege housing has several battery housing components, the shieldings of which are electrically connected to one another in the connected state, the entire battery housing can be connected to the vehicle ground via an electrical contact element of one of the Bat teriegehäusebauteile. An electrical connection, for example between the at least one flat shielding element and the electrically conductive coating in at least one shielding area, can also be established via the electrical contact element. The electrical contact element can be attached in at least one shielding area following the attachment of the at least one flat shielding element and / or the application of the electrically conductive coating. Preferably, however, the electrical contact element is already attached to it in an integral step when the base body is being produced. When the electrically conductive coating is applied in the area of the electrical contact element, it is automatically electrically connected to the electrically conductive coating. When attaching the electrical contact element in the area of a flat shielding element, the flat shielding element and the electrical contact element can be attached to it together when producing the base body. For example, the electrical contact element and the at least one flat shielding element can be positioned in a mold for producing the base body, so that they come into contact with the mold when the plastic material is injected or flowed into the mold and are connected to the base body. For this purpose, the plastic material can be additionally pressed in the mold in order to shape the base body and to establish the connection with the at least one flat shielding element and the electrical contact element. Preferably, electrical contact is automatically established between the at least one flat shielding element and the electrical contact element. The two battery housing components also preferably have corresponding circumferential flange regions with which the two battery housing components are connected to one another or can be connected to one another, a circumferential sealing element being arranged between the two flange regions. Contact surfaces of the flange areas of the two battery housing components come into contact with one another when the battery housing is installed. The circumferential sealing element seals the contact surfaces. The circumferential sealing element thus creates a tight seal between the two battery housing components when they are connected to the battery housing, whereby thermal insulation is formed against heat exchange, in particular by convection. This makes it easier to control the temperature of the battery cells of the traction battery. In addition, an airtight and moisture-tight seal for the battery housing is made possible. This reduces the risk of short circuits in the traction battery due to moisture penetration. The sealing element extends preferably only partially over the contact surface (s), especially if the sealing element is not electrically conductive. The shielding of the two battery housing components preferably extends in each case over the corresponding flange area with the contact surface. As previously stated, the shielding can extend over the entire contact surfaces or only part of them. As soon as the flange areas, in particular the contact surfaces, come into contact with one another when the two battery housing components are connected to form the battery housing, in addition to the mechanical connection of the battery housing components with the corresponding seal and with the shields extending over the respective contact surfaces, a electrical contact established. As a result, the shields of the battery housing components can make electrical contact with their flange areas. The features, design options and advantages described above in relation to the method according to the invention apply accordingly to the battery housing component and to the battery housing and vice versa.

Further advantages, details and features of the invention result from the exemplary embodiments explained below. The following show in detail:

FIG. 1: a side sectional view of a battery housing according to the invention with two battery housing components with an electrically conductive shield according to a first, preferred embodiment of the present invention;

FIG. 2: a plan view of one of the battery housing components with the electrically conductive shield from FIG

1;

FIG. 3: a flow chart of a method for producing the battery housing components of the battery housing from FIG.

1,

FIG. 4: a side, partial sectional view of a battery housing according to the invention with two battery housing components with an electrically conductive shield according to a second embodiment of the present invention;

FIG. 5: a detailed view from FIG. 4 with flange areas of the two battery housing components, the contact surfaces of which are in contact with one another; FIG. 6: a schematic detailed view of a battery housing with two battery housing components, the flange areas of which are in contact with one another, as a lateral sectional illustration, one of the flange areas having a circumferential groove with a sealing element inserted therein, according to a third embodiment of the present invention; and

FIG. 7: a detailed view of a battery housing with two battery housing components, the flange areas of which are in contact with one another, as a lateral sectional representation, one of the flange areas having a circumferential groove with a sealing element inserted therein, according to a fourth embodiment of the present invention.

In the description that follows, the same reference characters denote the same components or the same features, so that a description made with reference to a figure with regard to a component also applies to the other figures, so that a repeated description is avoided. Furthermore, individual features that have been described in connection with one embodiment can also be used separately in other embodiments.

Figure 1 shows a battery housing 1 with two battery housing components 2, 3 according to a first, preferred embodiment of the present invention. The battery housing 1 is a battery housing of a traction battery of an electrically drivable vehicle. The traction battery comprises a plurality of individual battery cells which are connected to one another in parallel and in series and are arranged together in a receiving space 11 of the battery housing 1.

The two battery housing components 2, 3 are a housing cover 2 and a housing trough 3. Each of the two Battery housing components 2, 3 comprise a base body 4 made of a plastic material. Various plastic materials can be used to manufacture the base body 4. A fiber-reinforced plastic material can be used to increase the strength of the battery housing components 2, 3. The base body 4 can also be made from an organic sheet.

Each of the two battery housing components 2, 3 further comprises an electrically conductive shield 5, which is arranged on a shield side 6 of the base body 4. The shield side 6 of the base body 4 is an outside based on the Batteriege housing 1. The outside is facing away from the receiving space 11 for the battery cells of the traction battery. The electrically conductive shield 5 is formed over the entire surface on the shield side 6. Full area means that continuous electromagnetic shielding is achieved.

As can be seen from FIGS. 1 and 2, the electrically conductive shield 5 has a flat shielding element 7 which is attached to the shield side 6 of the base body 4. In this exemplary embodiment, the flat shielding element 7 is a woven metal grid 7, which has a plurality of metal fibers 8 arranged in a grid-like manner. Interstices 9 or holes 9 are formed between the metal fibers 8. The woven metal grid 7 is made in this embodiment from metal fibers 8 made of, for example, aluminum, copper, iron, silver, tin, zinc, or other metals or any alloy based on one or more of the metals mentioned. The plastic material of the base body 4 extends into the holes of the flat shielding element 7.

As can also be seen from FIGS. 1 and 2, the base body 4 has a flat flat area 10 to which the flat shielding element 7 is attached. In addition, the base body 4 has a complex shaped area 12 which forms a shielding area 12 of the base body 4 and on which an electrically conductive coating 13 is applied to the shield side 6 of the base body 4. In this exemplary embodiment, the electrically conductive coating 13 is applied to the shield side 6 of the base body 4 by arc spraying of zinc. In the complex shape area 12, the base housing 4 can in principle have any desired 3D shape with bends and curves in different bend radii. The electrically conductive coating 13 is part of the electrically conductive shield 5. The electrically conductive shield 5 is accordingly formed jointly by the flat shielding element 7 together with the electrically conductive coating 13 in the shielding area 12.

As is also shown in FIGS. 1 and 2, the flat shielding element 7 is overlapped by the electrically conductive coating 13 in an overlap region 14. The electrically conductive coating 13 is applied in the overlap area 14 on the shield side 6 of the base body 4 on the flat shielding element 7, whereby an electrically conductive connection between the electrically conductive coating 13 and the flat shielding element 7 is established. The overlap area 14 is formed by a partial area of the flat shielding element 7 and a partial area of the electrically conductive coating 13.

As can be seen in particular from FIG. 1, the two battery housing components 2, 3 each have a circumferential flange area 15 at which the two battery housing components 2, 3 can be connected to one another. For this purpose, the flange areas 15 have contact surfaces 17 which come into contact when the two Batteriege housing components 2, 3 are connected. For this purpose, a circumferential sealing element 16 is arranged between the contact surfaces 17 of the flange areas 15 of the two Batteriege housing components 2, 3. When the two battery housing components 2, 3 are connected, the battery housing 1 is formed with the formation of the enclosed receiving space 11 for receiving the electrical battery cells. As is also shown in FIG. 1, the electrically conductive shielding 5 of the two battery housing components 2, 3 extends into the respective flange area 15 and partially over the contact surfaces 17. In this embodiment, this relates in detail to the respective electrically conductive coating 13 , which partially the contact surface 17 of the respective

Flange area 15 covered. When the two battery housing components 2, 3 are connected, the electrically conductive coatings 13 come into electrical contact with one another, so that a circumferential shielding of the battery housing 1 is automatically formed.

On one of the two battery housing components 2, 3, an electrical contact element, not shown, is attached in the area of the flat shielding element 7 and is connected to the flat shielding element 7 in an electrically conductive manner. Via the electrical contact element, a connection of the battery housing component 2, 3 can be made with a vehicle ground in order to establish equipotential bonding of the battery housing. In this exemplary embodiment, the electrical contact element is designed as a contact pin.

A method for producing the battery housing components 2, 3 according to the first embodiment is described below with additional reference to FIG.

Step S100 relates to the introduction of the flat shielding element 7 into a mold for shaping the base body 4. In this exemplary embodiment, the mold is a press mold. Step S110 relates to positioning an electrical contact element on the flat shielding element 7. In this exemplary embodiment, the electrical contact element is designed as a contact pin that extends through the flat shielding element 7.

Step S120 relates to a partial masking of the base body 4 on its shield side 6 in the area of the flat shielding element 7, specifically in the area of the electrical contact element. In this exemplary embodiment, the masking is carried out by applying a corresponding masking element to the flat shielding element 7 with the electrical contact element that has already been positioned in the form.

Step S130 relates to producing the base body 4 from a plastic material and attaching the flat shielding element 7 to the shield side 6 of the base body 4. The electrical contact element is attached to the base body 4 at the same time. The production of the base body 4 takes place in an extrusion process in the corresponding mold, in which the base body 4 is made from a plastic material and is molded. The plastic material first flows into the mold and is then shaped in the mold in a pressing step. The flat shielding element 7 and the electrical contact element are attached to the shielding side 6 of the base body 4. The plastic material, which is initially in a heated and plastically deformable state, is also partially pressed into the holes 9 of the metal grid 7 during pressing, so that it extends into the holes 9 of the metal grid 7, whereby a connection of the metal grid 7 is formed with the base body 4. When the molded base body 4 cools, the plastic material hardens in the holes 9, as a result of which the metal grid 7 is held on the base body 4. Only in the area of the masking is it prevented that the plastic material of the The blank extends into the holes 9 of the metal grid 7 when it is formed into the base body 4. This prevents a local connection between the base body 4 and the flat shielding element 7 in the area of the masking.

Step S140 relates to applying the electrically conductive coating 13 to the shield side 6 of the base body 4 in the shielding area 12. In this exemplary embodiment, the electrically conductive coating 13 is applied by arc spraying of zinc, which is applied in the entire shielding area 12 with the overlapping area 14 on the shielding side 6 of the base body 4 is applied. The electrically conductive coating 13 is therefore partially applied to the flat shielding element 7, i.e. to the metal fibers 8 and to the plastic material of the base body 4 in the holes 9. The shielding 5 is thereby formed coherently.

Figures 4 and 5 show a battery housing 1 with two battery housing components 2, 3 according to a second embodiment of the present invention.

The battery housings 1 of the first and second embodiments are largely identical, so that essentially differences between the battery housings 1 of the two embodiments are described below. Unspecified details of the battery case 1 of the second embodiment correspond - if necessary for the execution - those of the battery case 1 of the first embodiment.

The battery housing 1 is also here a battery housing 1 of a traction battery of an electrically drivable vehicle and comprises a battery cell arrangement 19 with a plurality of individual battery cells 20, one of which is shown in FIG. The battery cell arrangement 19 is arranged in a receiving space 11 of the battery housing 1. The battery cells 20 are connected via busbars 21 in parallel and / or in series with one another.

Each of the two battery housing components 2, 3 further comprises an electrically conductive shield 5, which is arranged on a respective shield side 6 of the corresponding base body 4. In the case of the housing cover 2, the screen side 6 is the inside which faces the receiving space 11. In the case of the housin sewanne 3, the screen side 6 is an outside that faces away from the receiving space 11.

The electrically conductive shield 5 is formed over the entire surface of each of the two battery housing components 2, 3 on its shield side 6.

For the housing cover 2, the electrically conductive shielding 5 is formed as follows. The electrically conductive shield 5 comprises a flat shielding element 7. In this exemplary embodiment, the flat shielding element 7 is designed as a metal plate, which is at the same time a cooling plate of the battery cell arrangement 19.

As can also be seen from FIG. 4, the flat shielding element 7 is attached in a flat flat area 10 of the base body 4.

In addition, the base body 4 of the housing cover 2 has a complex shaped area 12 which forms a shielding area 12 of the base body 4. In the complex shaped area 12, an electrically conductive coating 13 is applied to the shield side 6 of the base body 4. The electrically conductive coating 13 in the shielding area 12, together with the flat shielding element 7, forms the electrically conductive shield 5. As shown in detail in FIG. 4, the flat shielding element 7 overlaps in an overlap region 14 with the electrically conductive coating 13. In the assembled state, the flat shielding element 7 comes into contact with the electrically conductive coating 13. As is further illustrated in FIG. 4, an edge region 24 of the flat shielding element 7 is slightly raised to be supported on the base body 4, which results in elastic contacting of the electrically conductive coating 13 through the flat shielding element 7.

For the housing trough 3, the electrically conductive shield 5 is formed as described with reference to the first exemplary embodiment. In contrast to the housing pan 3 of the first exemplary embodiment, the flat shielding element 7 is bent in accordance with a shape of the base body 4 of the housing pan 3 and extends over a bottom wall 22 and partially along a side wall 23 thereof.

As shown in FIG. 4 and in detail in FIG. 5, the two battery housing components 2, 3 each have a circumferential flange area 15 at which the two battery housing components 2, 3 can be connected to one another. For this purpose, the flange areas 15 have contact surfaces 17 which come into contact when the two battery housing components 2, 3 are connected. The contact surface 17 of the housing pan 3 is completely coated with the electrically conductive coating 13.

In the second exemplary embodiment, the housing cover 3 is designed with a circumferential groove 18 in the contact surface 17. A circumferential sealing element 16 is received in the groove 18. The contact surface 17 of the housing cover 3 is only partially coated with the electrically conductive coating 13, namely a part of the contact surface 17 located on the inside from the groove 18 and facing the receiving space 11. When the two battery housing components 2, 3 are connected, the battery housing 1 is formed with the formation of the enclosed receiving space 11. The battery housing 1 is sealed by the telement 16 you between the contact surfaces 17. In addition, the electrically conductive coatings 13 of the contact surfaces 17 come into electrical contact with one another, so that a circumferential shielding of the battery housing 1 is automatically formed. The electrical contact is made internally in an area which is protected against environmental influences by the sealing element 16.

The production of the battery housing components 2, 3 according to the two th embodiment takes place as described above for the battery housing components 2, 3 of the first embodiment. The only difference is that for the housing cover 3, the flat shielding element 7 is not already applied to the base body 4 in step S120. Correspondingly, the flat shielding element 7 is not covered by it when the electrically conductive coatings 13 are applied in step S130. The flat shielding element 7 is attached in a subsequent step.

Figure 6 relates to a battery housing 1 with two Batteriegehäu sebautteile 2, 3 according to a third embodiment of the present invention.

The battery housings 1 of the second and third embodiments are largely identical and differ in the design of the flange areas 15, which is why only the differences between the battery housings 1 of the two embodiments are described below. Unspecified details of the battery case 1 of the third embodiment correspond - if necessary for the execution - those of the battery case 1 of the second embodiment. As shown in Figure 6, the two Batteriege housing components 2, 3 each have a circumferential flange area 15 at which the two battery housing components 2, 3 can be connected to one another. To this end, the flange areas 15 have abutting surfaces 17 that come into contact when the two battery housing components 2, 3 are connected. The contact surface 17 of the housing trough 3 is partially coated with the electrically conductive coating 13, namely a part of the contact surface 17 of the housing trough 3 which is located on the outside from a groove 18 in the housing cover 2 and faces away from the receiving space 11.

In the third exemplary embodiment, too, the circumferential groove 18 is formed in the contact surface 17 of the housing cover 2. The contact surface 17 and the groove 18 of the housing cover 2 are fully coated with the electrically conductive coating 13, ie the electrically conductive coating 13 extends through the groove 18 without interruption this Ausfüh approximately example is designed as a liquid seal.

When connecting the two battery housing components 2, 3 of the third embodiment, the battery housing 1 is formed while forming the enclosed receiving space 11. In this case, the battery housing 1 is sealed by the sealing element 16 between the contact surfaces 17. In addition, the electrically conductive coatings 13 of the contact surfaces 17 come into electrical contact with one another, so that a circumferential shielding of the battery housing 1 is automatically formed. The electrical contact is made on the outside in relation to the sealing element 16.

Figure 7 relates to a battery housing 1 with two Batteriegehäu sebautteile 2, 3 according to a fourth embodiment of the present invention. The battery housings 1 of the second and fourth embodiments are largely identical and differ in the design of the flange areas 15, which is why only the differences between the battery housings 1 of the two embodiments are described below. Unspecified details of the battery case 1 of the fourth embodiment correspond - if necessary for the execution - those of the battery case 1 of the second embodiment.

As shown in FIG. 7, the two battery housing components 2, 3 each have a circumferential flange area 15 at which the two battery housing components 2, 3 can be connected to one another. For this purpose, the flange areas 15 have contact surfaces 17 which come into contact when the two battery housing components 2, 3 are connected. The contact surface 17 of the

Housing cover 2 is partially coated with the electrically conductive coating 13. The coating 13 extends circumferentially over the contact surface 17 in an inner area 11 facing part of the contact surface 17 of the housing cover 2.

In the fourth exemplary embodiment, a circumferential groove 18 is formed in the contact surface 17 of the housing trough 3. On the bearing surface 17 and the groove 18 of the housing pan 3 are completely coated with the electrically conductive coating 13, that is, the electrically conductive coating 13 extends without interruption through the groove 18. In the groove 18, a circumferential sealing element 16 is received, which in this Embodiment is designed as a liquid seal. When connecting the two battery housing components 2, 3 of the third embodiment, the battery housing 1 is formed while forming the enclosed receiving space 11. The battery housing 1 is sealed between the contact surfaces 17 by the sealing element 16. In addition, the electrically conductive coatings 13 of the contact surfaces 17 come into electrical contact with one another, so that a circumferential shielding of the battery housing 1 is automatically formed. The electrical contact is made internally in an area that is protected against environmental influences by the sealing element 16.

List of reference symbols

1 battery case

2 Battery housing component, housing cover 3 Battery housing component, housing tray

4 base bodies

5 electrically conductive shield

6 shield side

7 flat shielding element, woven metal grid 8 metal fiber

9 space, hole

10 flat area

11 recording room

12 complex shape area, shielding area 13 electrically conductive coating

14 Overlap area

15 flange area

16 sealing element

17 contact surface 18 groove

19 Battery cell arrangement

20 battery cell

21 busbar

22 bottom wall 23 side wall

24 border area

Claims

1. A method for producing a battery housing component (2, 3) for a battery housing (1), in particular for a battery housing (1) of a traction battery of an electrically drivable vehicle, comprising the steps

Manufacture of a base body (4) from a plastic material,

Attaching at least one flat shielding element (7) to a shield side (6) of the base body (4), and applying an electrically conductive coating (13) to the shield side (6) of the base body (4) in at least one shielding area (12), the at least one flat shielding element (7) and the electrically conductive coating (13) in which at least one shielding area (12) are connected to form an electrically conductive shield (5) on the shielding side (6) of the base body (4).

2. The method according to claim 1, characterized in that the production of a base body (4) from a plastic material an injection molding of the base body (4) or a production of the base body (4) by molding a raw part of the base body (4) in a pressing process , in particular special extrusion, comprises in a corresponding form.

3. The method according to any one of claims 1 or 2, characterized in that the attachment of at least one flat shielding element (7) on a shield side (6) of the base body (4) to bring the at least one flat shielding element (7) to at least one Flat area (10) of the base body (4) comprises and / or applying an electrically conductive coating (13) to the shield side (6) of the base body (4) in at least one shielding area (12) comprises applying the electrically conductive coating (13) in at least one complex shaped area (12).

4. The method according to any one of the preceding claims, characterized in that the attachment of at least one flat shielding element (7) on a shield side (6) of the base body (4) to bring a metal foil, a metal sheet, a woven metal grid (7), comprises a metal grid made from a sheet metal by punching, laser cutting or the like, a metal grid made from a sheet metal as expanded metal, a metallically coated fabric, a metallically coated grid or a metallically coated fleece.

5. The method according to any one of the preceding claims, characterized in that the attachment of at least one flat shielding element (7) on a shield side (6) of the base body (4) brings an adhesive layer on one of the shield side (6) of the base body (4) facing side of the at least one flat shielding element (7) and / or applying an adhesive layer to the shield side (6) of the base body (4) and gluing the at least one flat shielding element (7) to the shield side (6) of the base body ( 4) includes.

6. The method according to any one of the preceding claims, characterized in that the method comprises introducing the at least one flat shielding element (7) into a mold for forming the base body (4), and The manufacture of a base body (4) from a plastic material comprises a molding of the base body (4) in the mold, the attachment of at least one flat shielding element (7) to a shield side (6) of the base body (4) integrally with the molding of the base body (4) is done in the form.

7. The method according to claim 6, characterized in that the introduction of the at least one flat shielding element (7) in a mold for forming the base body (4) introducing the at least one flat shielding element (7) with at least one hole (9) , preferably a plurality of holes (9), in particular as a grid or fabric, in the mold.

8. The method according to any one of the preceding claims, characterized in that the application of an electrically conductive coating (13) on the shield side (6) of the base body (4) in at least one shielding area (12) an application of the electrically conductive coating (13) by vapor deposition with metal vapor, in particular by a vacuum vapor deposition process with metal vapor, spraying with a liquid metal, in particular by an arc spray process with zinc, coating with an electrically conductive paint, in particular a solution of metal particles and / or carbon particles in a solvent, includes in particular a so-called copper color.

9. The method according to any one of the preceding claims, characterized in that the application of an electrically conductive coating (13) on the shield side (6) of the base body (4) in at least one shielding area (12) an application of the electrically conductive coating (13) in one with that comprises at least one flat shielding element (7) overlap the overlap region (14).

10. Battery housing component (2, 3) for a battery housing (1), in particular for a battery housing (1) of a traction battery of an electrically drivable vehicle, with a base body (4) made of a plastic material and an electrically conductive shield (5) attached to a The shield side (6) of the base body (4) is arranged, the battery housing component (2, 3) being characterized in that the electrically conductive shield (5) has at least one flat shielding element (7) which is attached to the shield side (6) of the Base body (4) is attached, the electrically conductive shield (5) has at least one shielding area (12) in which an electrically conductive coating (13) is applied to the shield side (6) of the base body (4), and at least a flat shielding element (7) and the electrically conductive coating (13) in which at least one shielding area (12) are connected to form the electrically conductive shield (5).

11. battery housing component (2, 3) according to claim 10, characterized in that the base body (4) has at least one flat area (10), and the at least one flat shielding element (7) is attached to the at least one flat area (10) , and / or the base body (4) has at least one complex shape area

(12) and the electrically conductive coating

(13) in the at least one complex shaped area (13) on the shield side (6) of the base body (4) in the at least one shielding area (12).

12. battery housing component (2, 3) according to any one of claims 10 or 11, characterized in that the at least one flat shielding element (7) as a Me tall film, as a metal sheet, as a woven metal grid (7), as from a metal sheet by punching, laser cutting o- the similarly produced metal grid, as a metal grid made from a metal sheet metal as expanded metal, as a metal-coated fabric, as a metal-coated grid or as a metal-coated fleece.

13. battery housing component (2, 3) according to any one of claims 10 to 12, characterized in that the battery housing component (2, 3) has an adhesive layer between one of the screen side (6) of the Grundkör pers (4) facing side of the at least a flat shielding element (7) and the shield side (6) of the Grundkör pers (4) is arranged.

14. battery housing component (2, 3) according to any one of claims 10 to 13, characterized in that the at least one flat shielding element (7) with we least one hole (9), preferably a plurality of holes (9), in particular as a grid or fabric , is executed, and the plastic material of the base body (4) extends into the at least one hole (9) of the at least one flat shielding element (7).

15. battery housing component (2, 3) according to any one of claims 10 to 14, characterized in that the electrically conductive coating (13) on the shield side (6) of the base body (4) in at least one shielding area (12) and at least a flat one Shielding element (7) are designed to overlap in an overlap region (14).

16. Battery housing component (2, 3) according to one of claims 10 to 15, characterized in that the at least one flat shielding element (7) is an electrically conductive element of a Batteriezelleanord voltage (19) with a plurality of electrical battery cells (20), in particular one Cooling plate or a bottom plate of the battery cell assembly (19).

17. battery housing component (2, 3) according to any one of claims 10 to 16, characterized in that the battery housing component (2, 3) has a circumferential

Flange region (15) for connecting to a corresponding battery housing component (2, 3), and the shield (5) extends over the flange region (15).

18. battery housing component (2, 3) according to claim 17, characterized in that the shielding area (12) has the circumferential flange area

(15) at least partially, and the shield (5) is formed in the flange area (15) by applying the electrically conductive coating (13).

19. battery housing component (2, 3) according to one of claims 17 or 18, characterized in that the flange area (15) has a substantially flat contact surface (17) as a contact surface for connection to the kor responding battery housing component (2, 3), and a circumferential groove (18) is ausgebil det in the contact surface (17), a circumferential sealing element in the groove (18)

(16) is recorded or recordable.

20. battery housing component (2, 3) according to claim 19, characterized in that the circumferential sealing element (16) is designed as a liquid seal, the liquid seal being applied in particular to the electrically conductive coating (13).

21. battery housing component (2, 3) according to any one of claims 10 to 20, characterized in that the battery housing component (2, 3) has an electrical Kontak telement which is electrically connected to the shielding (5).

22. battery housing (1), in particular for a traction battery rie of an electrically driven vehicle, with two battery housing components (2, 3) according to one of claims 10 to 21, characterized in that the two battery housing components (2, 3) forming egg nes enclosed receiving space (11) for receiving a plurality of electrical battery cells and under Kontaktie tion of their shields (5) connected to one another or can be connected to one another.

23. Battery housing (1) according to claim 22, characterized in that the two battery housing components (2, 3) have korrespondie-generating, circumferential flange areas (15) with which the two battery housing components (2, 3) are connected or can be connected to one another , a circumferential sealing element (16) being arranged between the two flange regions (15).