Holder for fastening busbar, housing comprising holder and method for fastening busbar, battery and motor vehicle

Abstract

A busbar assembly (1) for installation in a battery for a motor vehicle, comprising: a housing (2) in which at least one busbar (3) is arranged; and a holder (4) for fixing the busbar (3) in the housing (2), which holder is optionally made at least of plastic. The holder (4) comprises a holding region (5) designed to hold the at least one busbar (3) and a contact region (6) designed to fix the holder (4) in the housing (2). The contact region (6) of the holder (4) has a joining surface (7), and the holder (4) is joined at the joining surface (7) to a mating joining surface (8) on the inner side (27) of the housing (2) and / or on a busbar receptacle (9) arranged in the housing (2), which mating joining surface corresponds to the joining surface, and / or is adhered to the mating joining surface in particular by means of the joining surface (7) in order to fix the busbar.

Description

Technical Field

[0001] The invention relates to a retaining element for fixing a busbar in a housing, a housing comprising the retaining element, and a method for fixing a busbar in a housing, as well as a battery and a motor vehicle. Background Art

[0002] It is known in the field of batteries for electric vehicles that battery cells and battery modules are electrically interconnected by collecting conductors (which are synonymously called busbars). The busbar can be formed as a rigid current conductor made of a well-conducting metal (more precisely, a metal sheet wire), for example, copper or aluminum. Alternatively, the busbar can be formed not only as a metal sheet wire, but also as a solid solid material wire or a braided belt and a thin sheet belt. Since well-conducting metals such as copper or aluminum are relatively expensive and heavy, attempts are made to use them economically. For example, efforts are made to keep the cross-section of the busbar used as small as possible. A criterion that contradicts the reduction of the cross-section is the heat generated in the busbar relative to the electrical load capacity, because the faster the heat generated by the current can be dissipated, the smaller the cross-section of the busbar will be. A cooler busbar can also have a lower resistance, which is important from an efficiency point of view.

[0003] For example, a busbar assembly and a method for producing a busbar assembly are known from DE 10 2013 204 825 A1.

[0004] In order to prevent accidental contact with the busbar and to shield the busbar from the environment, the busbar can be received in a half-shell or double-sided housing or equipped with an extruded insulation. Here, the busbar must be fixed in the housing to avoid noise during the driving of the motor vehicle and vibrations that may cause damage to the busbar itself. In addition, protection against breakdown relative to other components (such as short circuits, etc.) should also be provided. For example, the busbar is fixed in the housing by means of a threaded connection, which has problems in sealing relative to liquids. That is, in a motor vehicle, the housing must be sealed relative to liquids. In addition to receiving the screw torque, the threaded connection must also be tight and have sufficient electromagnetic compatibility (EMC) contacts. In addition, it is necessary to compensate for manufacturing tolerances between the busbar and the housing. Summary of the invention

[0005] Starting from the known prior art, the object of the present invention is to provide an improved holder for fixing a busbar and a housing comprising the holder and a corresponding production method.

[0006] This object is further achieved by a holder for fixing a busbar in a housing having the features of claim 1. Advantageous embodiments of the holder are apparent from the dependent claims as well as from the description and the drawings.

[0007] Accordingly, a retaining member for fixing a busbar in a housing is proposed. The retaining member includes a retaining region configured to hold the busbar and a contact region configured to fix the retaining member in the housing. According to the present invention, the joint surface of the contact region is configured to be bonded to a mating joint surface of the housing or to a busbar receiving body arranged in the housing.

[0008] In other words, the contact region can include a joint surface for an adhesive or glue connection, via which a joint connection with the housing (e.g. the inside of the housing shell or other structures of the housing or a busbar receiver) can be established. For example, the contact region can also be formed on, in particular foamed on, the mating joint surface.

[0009] “Designed for bonding” can also mean that the holder in the contact area, in particular the joining surface, is made of a self-adhesive plastic. As a result, no additional adhesive is required to form the adhesive connection.

[0010] The advantage of this is that a threaded connection between the holder and the housing can be omitted, thereby optionally improving the tightness of the housing. In addition, by omitting a threaded connection for fixing the holder, the number of components can be reduced and the manufacturing process can therefore be improved. In addition, the weight of the busbar assembly can be reduced by using a holder. In addition, by using a bonded mechanical connection instead of a threaded connection, the adaptation to manufacturing tolerances can be improved.

[0011] The retaining element, in particular the contact region, can have a structure comprising a protuberance and / or a recessed portion, which is configured to form a joint connection together with a corresponding counterpart structure. In other words, the retaining element, in particular in the contact region, can have a structure comprising at least one protuberance and / or a recessed portion on at least one wall side facing the inner wall of the housing and / or on a busbar side facing the busbar, which is configured to form a joint connection together with a corresponding counterpart structure, which comprises at least one mating recessed portion and / or mating protuberance.

[0012] The bonded connection can also be a form-locking bonded connection, in particular a clamping connection. For example, the raised portion can be designed as a projection, and the recessed portion can be designed as a depression and / or a bore, which are designed to form a bonded connection, in particular a clamping connection, together with the corresponding projection and / or depression and / or bore. This results in the following advantage: the stability of the adhesive connection with respect to shear forces can be increased.

[0013] In addition or alternatively, the recess and / or the counter recess can be configured as a groove-shaped recess or in particular as a depression. The raised portion and / or the counter raised portion can be configured to correspond to the groove-shaped recess and / or the depression. This results in the following advantage: the stability of the adhesive connection with respect to shear forces can be increased.

[0014] Additionally or alternatively, the holding region can have the aforementioned structure.

[0015] The holder can include plastic and / or foam material or be constructed from it. By constructing from plastic and / or foam material, in addition to being able to achieve good configurability of the functional area, improved vibration damping can also be achieved at the same time. In addition, reliable electrical insulation properties of the holder can also be achieved in this way.

[0016] The holding element can be designed in one piece.

[0017] The holder, in particular the contact region, can include a bore and / or an elongated hole, which is designed to form a joint connection with a counterpart structure, in particular a corresponding counterpart projection, wherein the projection and / or recess optionally include a bore and / or an elongated hole. Alternatively, the elongated hole can be designed as a recess, in particular a long depression. The counterpart projection can be designed as a projection corresponding to the elongated hole, in particular a long projection. This results in the following advantages, in addition to increasing the stability against shear forces, a guide for positioning the holder in the busbar assembly is also provided.

[0018] The deepenings and / or the elevations can have a variable wall thickness in a height direction, in particular a stepped wall thickness, which is orthogonal to the longitudinal direction of the busbar and to a transverse direction orthogonal to the longitudinal direction, wherein the deepenings and / or the elevations can optionally include steps. In other words, the material thickness of the holder can vary in the height direction, in particular in the deepenings and / or at the elevations. In this case, the wall thickness can decrease with increasing depth of the deepenings and / or increasing height of the elevations, in particular in the height direction, for example by means of steps in the deepenings and / or at the elevations. This results in the advantage that the elasticity of the holder is increased for improved tolerance compensation.

[0019] The deepening and / or the raised part can include a depression and / or a borehole and / or an elongated hole in the height direction, wherein the depression and / or the borehole and / or the elongated hole can have different diameters along the height direction, wherein, optionally, the diameter can increase or decrease along the height direction with increasing depth. In other words, the deepening and / or the depression and / or the borehole and / or the elongated hole can include a plurality of depressions with different diameters, so that the wall thickness decreases with increasing depth of the deepening, especially along the height direction. Thus, a stepped wall thickness corresponding to the diameter is achieved. As a result, the wall thickness of the raised part (especially the spacer) located on the other side relative to the deepening is also reduced accordingly, thereby achieving a stepped reduction in wall thickness. This results in the following advantage, the raised part can be pressed in telescopically, thereby further increasing the elasticity of the retaining element for improving tolerance compensation.

[0020] The engagement surface can be arranged in the recess and / or on the elevation and can optionally include a depression and / or a bore and / or an elongated hole. In other words, the mating engagement surface can be arranged on the corresponding mating elevation and / or mating recess so that, for the engagement of the retaining element, the corresponding elevation and / or recess can engage in the corresponding mating recess and / or on the mating recess to form the engagement connection. The engagement connection can optionally be designed as a clamping connection. This results in the following advantage: the stability against shear forces is further improved.

[0021] The retaining element may in particular comprise a distance retaining element in the retaining region, which is formed in one piece with the retaining element or is at least formed of a material different from the retaining element, in particular a material that is more elastic than the material of the retaining element, wherein the distance retaining element may optionally have a contact shape and / or a cavity and may be configured to press against the busbar for fixing. In other words, the distance retaining element may be configured as a raised portion of the retaining element and may optionally comprise at least one chamfer. The distance retaining element, in particular the contact shape, may have a wedge shape or a pyramid shape. Optionally, the distance retaining element and / or the contact shape may have a tip, in particular a rounded tip, by means of which the distance retaining element and / or the contact shape may be pressed against a surface, in particular a recessed portion in the surface of the busbar that matches the tip. For example, the material may be plastic.

[0022] Instead of a cavity, the spacer on the busbar side of the holder has a recessed portion that matches the spacer on the wall side of the holder, thereby reducing the wall thickness of the holder. Optionally, the recessed portion can have steps, thereby further increasing the elasticity of the spacer.

[0023] The holder can include at least two spacers, in particular in the holding region, along the longitudinal direction of the busbar, wherein the spacers are separated in the longitudinal direction by a gap, and the gap is optionally filled with a heat dissipation medium. In other words, the spacers can have a gap or an interruption along the longitudinal direction, and the interruption is optionally filled with a heat conducting medium. This results in the following advantage, which further improves the heat dissipation of the busbar in the busbar assembly.

[0024] The holder can have a bevel in the height direction relative to a plane in the transverse direction, and / or the holding region can have a thinner wall thickness than the contact region, in particular in the transverse direction. In other words, the holder can have a wave shape in a plane relative to the transverse direction, which wave shape can optionally include a bevel or an offset. The bevel can here include a slope and / or an offset of the holder, in particular in the height direction. This results in the advantage that busbars of different sizes can be fixed by the holder.

[0025] This object is also achieved by a housing having the features of claim 10. Advantageous developments are apparent from the dependent claims, the description and the drawings.

[0026] Accordingly, a housing for a busbar is proposed, the housing comprising a holder for fixing the busbar. The holder comprises a holding area and a contact area, wherein the holding area is configured to hold at least one busbar and the contact area is configured to fix the holder in the housing.

[0027] According to the present invention, the contact area of ​​the retaining member has a joining surface, and the retaining member is joined to a mating joining surface of the shell corresponding to the joining surface at the joining surface and / or is joined to a bus receiving body arranged in the shell for fixing the bus and / or is bonded to the mating joining surface of the shell by means of the joining surface.

[0028] In other words, the contact area of ​​the retaining element can have a mating surface, and the retaining element can be joined on the mating surface and / or bonded to a mating mating surface of the shell corresponding to the mating surface, for example on the inner side of the shell and / or on a busbar receiving body arranged in the shell for fixing the busbar.

[0029] In addition or alternatively, the holder can be formed, especially foamed, onto the mating joint surface of the inner side and / or the busbar receiving body and optionally on the busbar. Optionally, electrical insulation can be provided between the busbar and the inner wall of the housing, especially by the electrical insulation of the holder.

[0030] In this case, within the framework of the degassing concept, the holder can be arranged and embodied in such a way that in the event of a battery explosion, i.e. in the event of a thermal runaway of one or more battery cells, a targeted gas conduction is achieved. For this purpose, the holder can be designed to form a gas-tight joint connection with a mating joint surface, in particular a mating structure of the mating joint surface, and / or to at least partially surround the corresponding busbar in a gas-tight manner. Furthermore, a gas conduction structure can also be introduced.

[0031] The busbar can be constructed in the form of a sheet metal wire, preferably a copper sheet wire and / or an aluminum sheet wire. The housing can be a half-shell or double-sided. In the double-sided variant, the housing has a lower shell and an upper shell, which are joined together to form the housing and are optionally connected to each other by means of connecting elements. By connecting the upper shell and the lower shell, the retaining element can be pressed against the inner side and / or the busbar receiver and / or the busbar by means of mechanical stress. The connecting element can be a welded, soldered, riveted, threaded and / or adhesive connection.

[0032] The retaining element can be configured as a clamping device. The retaining area of ​​the retaining element and / or the busbar receiver can, for example, include a receiving portion, which is configured to be smaller than the width of the corresponding received busbar by a predetermined amount. The retaining area of ​​the busbar receiver can be delimited by a tab, which tab can optionally include a mating engagement surface. In this way, a clamping effect on the busbar can be achieved for fixing. The retaining element and / or the busbar receiver can surround the corresponding busbar at least on three sides, in particular completely, in the circumferential direction of its cross section orthogonal to its longitudinal extension.

[0033] The "encirclement" of the busbar by the retaining member and / or the busbar receiver described in this article can be an adhesive encirclement, wherein at least one plastic of the retaining member and / or the busbar receiver is permanently bonded to the mating joint surface by means of the joint surface and optionally permanently bonded to the outside of the corresponding busbar in the retaining area, in particular by means of the receiving part and / or by means of the spacing member.

[0034] The holder and / or the busbar receiving body can include or be formed from at least one elastic plastic, in particular an elastic plastic made of an elastomer and / or a thermoplastic elastomer. The holder can be designed in one piece.

[0035] Additionally or alternatively, the holder may be formed by at least one foam body, which in particular comprises a plastic foam, for example a polyurethane foam. The foam body may optionally have a density of 0.5 to 1.5 kg / dm 3 , especially 0.8 to 1.2 kg / dm 3The plastic of the holder, in particular the foam, can have a Shore A hardness of 60 to 100, in particular a Shore A hardness of 80 to 90 and / or have a flammability requirement of UL94 V0 or UL94 HB. In this way, the holder can be elastically designed and thus optionally provide vibration damping. The holder can be formed, in particular injection-molded and / or foamed at least on the inner side of the housing and / or on the foam and optionally on the busbar.

[0036] The term "formed" or "shaped" is defined here as the bonding of the adhesive and / or reactive plastic material to the surface of the adhesive partner (in particular the mating joint surface) produced during the forming of the retaining part, such as injection molding or casting, while in a flowable state, for example on the surface of the corresponding busbar and / or on the inner side of the housing and / or busbar receiving body.

[0037] The term "foaming" or "foamed" is defined here as the adhesion of the reactive foam material to the surface of the bonding partner (especially the mating joint surface) during the foaming process of the plastic foam. Here, in the foaming process for constructing a retaining part in the form of a foam body, due to the adhesive effect of the reactive foam during foaming, the foam will be permanently bonded to the inner side of the housing and / or the busbar receiver and optionally to the corresponding busbar. Here, no bonding step using an additional adhesive is performed. Therefore, there may be no additional adhesive layer between the foam material of the foam body and the corresponding mating joint surface. More precisely, the foam body, especially the retaining part, can be directly bonded to the joint surface at the corresponding mating joint surface. Therefore, "foaming" can be a construction scheme of "forming", just like "injection molding" or "injection molding".

[0038] The joining surface and / or the counter-joining surface may be pre-treated beforehand, for example cleaned or roughened. An adhesion promoter or an adhesion promoting layer, in particular a primer, may be applied to the joining surface and / or the counter-joining surface.

[0039] This results in the following advantages: a threaded connection between the holder and the housing can be omitted, thereby optionally improving the tightness of the housing. Furthermore, by omitting a threaded connection for fixing the holder, the number of components can be reduced and the manufacturing process can be improved. Furthermore, the weight of the busbar assembly can be reduced by using fewer components. In addition, by using an adhesive mechanical connection instead of a threaded connection, the adaptation to manufacturing tolerances can be improved.

[0040] The retaining member may have, in particular, a structure comprising a raised portion and / or a recessed portion in the contact region, which structure forms a joint connection together with a matching structure arranged on the inner side of the housing and / or on the busbar receiving body and corresponding to the structure of the retaining member, the matching structure comprising a corresponding matching raised portion and / or a matching recessed portion. In other words, the structure of the retaining member may be engaged into the matching structure on the inner side of the housing and / or into the matching structure of the busbar receiving body. The raised portion and / or the recessed portion may be configured to form a joint connection, in particular a shape-locking joint connection, with the matching recessed portion and / or the matching raised portion accordingly. For example, the joint connection may be a clamping connection. Therefore, the structure and / or the matching structure may be configured to form a joint connection. For example, the raised portion and / or the matching raised portion may be configured as a cam, and the recessed portion and / or the matching recessed portion may be configured as a sunken portion capable of accommodating the cam. This results in the following advantage, which is that shear forces may be offset and the stability of the busbar assembly may thus be improved.

[0041] Additionally or alternatively, the holding region can have this structure and optionally the surface of the busbar can have a mating structure.

[0042] The holder and the optional protrusion and / or recess can include a bore and / or an elongated hole, in particular in the contact region, which can form a joint connection with the mating structure, in particular with the mating protrusion corresponding thereto. Alternatively, the holder can include an elongated depression or recess instead of the elongated hole. The structure of the holder can have a depression and / or a bore, which can form a joint connection with a corresponding projection of the mating structure, in particular an elongated projection. In addition, the depression and / or the bore can optionally provide a guide when positioning the holder together with the projection of the mating structure. This results in the following advantages: shear forces can be offset and positioning assistance can be provided.

[0043] The recesses and / or elevations can have a variable wall thickness, in particular a stepped wall thickness, in a height direction perpendicular to the longitudinal direction of the busbar and perpendicular to a transverse direction perpendicular to the longitudinal direction, wherein the recesses and / or elevations can optionally include steps. This results in the advantage that the elasticity of the holder can be increased to improve tolerance compensation.

[0044] In addition or as an alternative, the recessed portion and / or the raised portion can include a depression and / or a borehole and / or an elongated hole in the height direction, wherein the depression and / or the borehole and / or the elongated hole have different diameters in the height direction, wherein, optionally, the diameter increases or decreases in the height direction with increasing depth. This makes it possible to achieve a stepped wall thickness, which increases or decreases in the height direction. This results in the advantage that the elasticity of the holder can be further increased to improve tolerance compensation. The depression and / or the borehole and / or the elongated hole of this structure can receive a corresponding projection of a mating structure for a form-locking joint connection. This results in the advantage that the stability with respect to shear forces can be further improved.

[0045] The counter-joint surface can be arranged in a counter-recess and / or a counter-elevation and can optionally comprise a depression and / or a bore and / or an elongated hole, respectively.

[0046] Additionally or alternatively, the contact surface of the holding element can be arranged in the recess and / or on the elevation and can each optionally comprise a depression and / or a bore and / or an elongated hole.

[0047] This results in the advantage that the stability against shear forces can be further improved.

[0048] The holder can include a spacer in the holding region, which is formed in one piece with the holder or at least is formed from a different material than the holder, in particular a material that is more elastic than the material of the holder, wherein the spacer optionally has a contact shape and / or a cavity and is designed to press the busbar against the inner side of the housing and / or the busbar receiver. In other words, the spacer can be made of the same plastic as the holder, wherein the spacer can be designed as a protrusion. The contact shape of the spacer can be designed to adapt the busbar, in particular in a form-fitting manner, and / or to hold the busbar under mechanical stress.

[0049] For example, the spacer can be designed, in particular by means of a contact shape, on the one hand to adapt the busbar and on the other hand to hold the busbar under mechanical stress at a certain temperature and dynamic conditions.

[0050] For example, the contact shape of the spacer can be a wedge shape or a pyramid shape. For example, the material can be plastic. This results in the following advantage: the elasticity of the holder is improved when the busbar is fixed.

[0051] Additionally or alternatively, the spacer can have a rounded tip and / or a step, wherein the spacer presses against the busbar, in particular with the tip on the surface of the busbar, in particular in a recess on the surface of the busbar that matches the tip. This results in the advantage that the elasticity of the spacer is further improved.

[0052] As an alternative to the cavity, the holder can have a matching recess in the holding region on the opposite wall side of the holder relative to the spacers on the busbars of the holder, so that the wall thickness in the region of the spacers and / or of the elevation is reduced. The holder can therefore also have a recess in the holding region. This results in the following advantage: the elasticity of the holder is further improved.

[0053] In addition or alternatively, the holder can include at least two spacers in the longitudinal direction of the busbar, in particular in the holding region, wherein the spacers are separated in the longitudinal direction by a gap and the gap is optionally filled with a heat dissipation medium. In other words, the spacers can have a gap in the longitudinal direction, which can be optionally filled with a heat dissipation medium. This results in the advantage that in addition to the elasticity, the thermal conductivity is also improved.

[0054] The holder can have a bevel in the height direction with respect to a plane in the transverse direction and / or the holder can optionally have a thinner wall thickness in the holding region in the transverse direction than in the contact region. In other words, the holder can have a wave shape in a plane in the transverse direction, which wave shape in particular includes a bevel. The bevel can be designed, for example, as an inclination of the body of the holder and / or as an offset of the body, in particular in the height direction, compared to a bulge and / or a recess. This results in the advantage that the holder can be adapted to busbars of different sizes.

[0055] The above object is further solved by a battery or battery system comprising the busbar assembly and / or the holder. The battery or battery system can be configured as a main drive battery of a motor vehicle, which can provide (high voltage) power for an electric motor of the motor vehicle (in particular as a main drive). The battery system can serve as an electrical interconnection of a plurality of battery packs, each of which comprises a plurality of battery cells.

[0056] The above object is further achieved by a motor vehicle comprising the battery or the battery system. Preferably, the motor vehicle can be configured as a car, in particular a passenger car or a commercial vehicle, or a bus or a motorcycle. The motor vehicle can be an electrically powered (EV) or in particular a hybrid electric vehicle (HEV, PHEV), wherein the components provided for this purpose in the motor vehicle can be the battery or the electrical consumers of the battery system, respectively.

[0057] This object is further achieved by a method for fastening a busbar having the features of claim 15 or claim 16. Advantageous developments of the method are apparent from the dependent claims as well as from the description and the drawings.

[0058] Therefore, a method for fixing at least one busbar by means of a holder, in particular the holder described above, is proposed, the method comprising the following steps:

[0059] - forming, in particular foaming, the retaining element onto a mating surface of the housing and / or onto a mating structure on the inner side of the housing and / or onto a busbar receiving body in the housing;

[0060] At least one busbar is arranged in the housing and fixed by means of a retaining element.

[0061] Accordingly, a method for fixing at least one busbar by means of a holder, in particular the above-mentioned holder, is also proposed, the method comprising the following steps:

[0062] - arranging at least one busbar in the housing and / or on a busbar receiver, wherein the busbar receiver is arranged in the housing;

[0063] - applying adhesive to the engagement surface of the holder and / or to the mating engagement surface of the housing and / or to the busbar receiving body;

[0064] - engaging the engagement surface of the retaining member with the mating engagement surface;

[0065] The at least one busbar is fixed in the housing by means of a retaining element.

[0066] In other words, the plastic can be foam. The busbar assembly can include a housing and at least one busbar and optionally a retaining member. The housing can be the above-mentioned housing and / or the retaining member can be the above-mentioned retaining member. The retaining member, in particular the foam, can be shaped, in particular foamed, against a matching structure on the inner side of the housing and / or a matching structure on the busbar receiving body and optionally against the surface of the busbar. Thus, a structure of the retaining member corresponding to the matching structure can be formed by means of shaping of the plastic, in particular foaming of the foam, onto the matching structure.

[0067] The retaining member can then be joined to the mating joint surface by assembling the upper cover and the lower cover on the joint surface, and optionally pressed against the mating joint surface and / or against the inner side of the housing and / or the busbar receiving body and optionally the busbar by mechanical stress provided by the upper cover and the lower cover to fix the busbar.

[0068] This results in the advantage that a screw connection for fixing the holder in the housing can be omitted, wherein the stability against shear forces of the holder is additionally improved. In addition, the adaptation to tolerances is improved due to the elasticity of the holder.

[0069] Optionally, after the holder has been shaped, in particular foamed, a spacer can be arranged on the holder on that side of the holder which faces the busbar.

[0070] In other words, the retaining member can be pressed against the inner side of the housing and / or the busbar receiving body to fix the busbar by a mechanical stress, which is generated when the upper cover shell and the lower cover shell are joined to each other and is directed toward the mating joint surface and optionally toward the surface of the busbar. The housing can be the above-mentioned housing and / or the retaining member can be the above-mentioned retaining member. The busbar can optionally be arranged in the housing in an electrically insulated manner toward the inner side of the housing, and the electrical insulation is supplemented or alternatively provided by a retaining member comprising at least one plastic. Optionally, while engaging the retaining member, the retaining area of ​​the retaining member can be engaged to the busbar. Optionally, the spacing retaining member can be engaged on the busbar surface toward the deepening portion. This results in the following advantage, that a threaded connection for fixing the retaining member in the housing can be omitted, wherein the adaptation to manufacturing tolerances is additionally improved by the elasticity of the retaining member and the joint connection.

[0071] The invention also includes implementations which include a combination of features from the described embodiments. Optionally, the described busbar assembly and / or the holder may have structural features from the described method, and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Other preferred embodiments of the present invention are explained in more detail by the following description of the accompanying drawings. Herein, it is shown:

[0073] Figure 1 Schematically shows a top view of the busbar assembly from above;

[0074] Figure 2 schematically shows a cross section of a busbar assembly;

[0075] Figure 3 A first embodiment of a holder is schematically shown in a perspective view.

[0076] Figure 4 A first specific embodiment of a holder is schematically shown in a top view.

[0077] Figure 5 A second embodiment of a holder is schematically shown in a perspective view.

[0078] Figure 6 A second embodiment of a holder is schematically shown in a top view.

[0079] Figure 7 a schematic diagram showing a first embodiment of a method for manufacturing a busbar assembly; and

[0080] Figure 8A schematic illustration of a second specific embodiment of a method for producing a busbar arrangement is shown. DETAILED DESCRIPTION

[0081] Preferred embodiments are described below with reference to the accompanying drawings. In this regard, identical, similar or functionally identical elements are provided with identical reference numerals in different drawings, and repeated descriptions of these elements are partially omitted to avoid redundancy.

[0082] Figure 1 A schematic top view of a busbar assembly 1 in a battery is shown, the battery comprising a housing 2 in which at least one busbar 3 is arranged in a longitudinal direction x. The busbar 3 can be designed as a metal cuboid in the longitudinal direction x and in the transverse direction y, which forms a current-carrying element or in which at least one current-carrying element for electrically connecting battery cells of the battery is arranged, such as a cable. The housing 2 comprises a lower cover 11 and an upper cover (not shown), which are joined to each other to close the housing 2 and are held to each other by means of a threaded connection 28. In order to fix the busbar 3 in the housing 2, in particular in the lower cover 11, a retainer 4 is installed in the housing 2, in particular in the lower cover 11 or inserted into the upper cover (not shown).

[0083] The holder 4 can include at least one plastic, in particular an elastomer, or be formed therefrom, and comprises a contact region 6 for fixing the holder 4 in the housing 2 and a holding region 5 for holding the busbar 3. The contact region 6 can, for example, include a joint surface 7, which can be configured in particular as an adhesive surface for an adhesive or glue connection. The joint surface 7 can in particular include a self-adhesive plastic.

[0084] In the contact area 6, the retaining member 4 is joined at the joining surface 7 to, in particular glued to, a mating joining surface 8 corresponding to the joining surface on the inner side 27 of the housing 2 (in particular the lower cover 11), and / or is joined to, in particular glued to, a mating joining surface 8 corresponding to the joining surface of a busbar receiver (not shown) arranged in the housing 2.

[0085] The mating joint surface 8 can also be configured as a mating adhesive surface. The joint surface 7 and / or the mating joint surface 8 and / or the surface of the busbar 3 can be pre-treated in advance, for example cleaned or roughened. Optionally, an adhesion promoter or an adhesion promoting layer, especially a primer, can be applied.

[0086] Alternatively, the holder 4 can be formed or foamed onto the mating joint surface 8 and optionally onto the busbar 3 arranged in the housing 2. In this case, the holder 4 is permanently bonded to the inner side 27 of the housing 2 and / or to a busbar receiving body (not shown) and optionally to the busbar 3 at the joint surface 7 and the mating joint surface 8.

[0087] The contact region 6 optionally has a structure (not shown) which improves the strength against shear forces by means of a corresponding counterstructure (not shown).

[0088] The holding region 5 of the holding element 4 is designed to hold at least one busbar 3 , for example by pressing it against the inner side 27 and / or a corresponding busbar receiver (not shown) by means of spacers (not shown).

[0089] Additionally or alternatively, the holding region 5 of the holding element 4 can be configured to receive at least a portion of the busbar 3 or at least a portion of at least one busbar 3. Additionally, the holding element 4, in particular the holding region 5, can be formed, in particular injection molded and / or foamed onto the busbar 3. Additionally, the holding element 4 can be formed, in particular injection molded and / or foamed onto the inner side 27 of the housing 2, in particular the upper shell or the lower shell, and / or onto a busbar receiving body (not shown).

[0090] In addition, the holding area 5 can surround the busbar 3 at least on three sides in the circumferential direction of the cross section of the busbar along the longitudinal direction x. Here, "surrounding" can mean "bonded surrounding", in which the material of the holding part 4, in particular the elastomer, is permanently bonded to the outer surface of the busbar 3.

[0091] In addition, the holding region 5 can completely surround the busbar 3 in the circumferential direction of its cross section along the longitudinal direction x, wherein the surface facing away from the busbar 3 can serve as an optional joining surface 7 .

[0092] By using adhesive bonding or forming of the holder 4 onto the inner side 27 of the housing 2 and / or the busbar receiving body to fix the holder 4, a separate screw connection 28, by means of which the holder 4 can be fixed in the housing 2, can be omitted. The sealing of the housing 2 can be improved by omitting a separate screw connection 28 for fixing the holder 4 in the housing 2. In addition, the elasticity of the holder can be improved to compensate for manufacturing tolerances.

[0093] Figure 2A cross section of a busbar assembly 3 along the longitudinal direction x is schematically shown. The housing 2 comprises an upper shell 10 and a lower shell 11, which are connected to each other by means of a screw connection 28 and form the housing 2. In the housing 2, a busbar receiver 9 is arranged on the lower shell 11, and a retaining element 4 is arranged on the upper shell 10. The busbar 3 is arranged on the busbar receiver 9, which has a retaining area 5 for receiving at least one busbar 3. Here, at least one busbar 3 can be arranged in each retaining area 5 of the busbar receiver 9. In addition, the busbar receiver 9 can be bonded to the inner side 27 of the housing 2, in particular to the inner side of the lower shell 11 or the upper shell 10. In addition or alternatively, the busbar receiver can be fixed in the housing 2 by means of a screw connection 28 between the upper shell 10 and the lower shell 11.

[0094] The holding region 5 of the busbar receiving body 9 can be designed similarly to the holding region 5 of the holder 4. In addition, the busbar receiving body 9, in particular the holding region 5, comprises a lug 29 for holding the busbar 3. Here, the busbar 3 in the holding region 5 is arranged on two mutually opposite sides in the circumferential direction of its cross section in the longitudinal direction x on the respective lug 29 for fixing.

[0095] The holder 4 is arranged on the inner side 27 of the housing 2 opposite the busbar receiving body 9. For example, the holder 4 is glued or integrally formed onto the inner side 27. The holder 4 is pressed against the busbar receiving body 9, in particular the tabs 29, by means of the contact area 6, while the holding area 5 is pressed against the surface of the busbar 3 by means of the spacer 23.

[0096] Alternatively, the contact region 6 of the holder 4 can have a thicker wall thickness 30 than the holding region 5, or the contact region 6 can have a thinner wall thickness 30 than the holding region 5. Furthermore, the holder 4 can have a combination of the thicker wall thickness of the contact region 6 and the thinner wall thickness 30.

[0097] The holder 4 comprises, in particular in the contact region 6, a structure 12 which is formed at least by a protrusion 13 and / or a recess 14 and which is provided for being engaged on a mating structure 15 of the busbar receiver 9 and / or, alternatively, on the inner side 27 of the housing. The mating structure 15 is also formed by at least one mating protrusion 16 and / or a mating recess (not shown). For example, the mating protrusion 16 can be designed as a projection which, together with the recess 14 of the holder 4 which can be designed as a depression, forms a joining connection, in particular a clamping connection. Thus, the mating protrusion 16 can be installed in the recess 14. This further improves the stability against shear forces.

[0098] The retaining member 4 has a spacer 23 in the retaining region 5 which is configured to retain the busbar 3. The spacer 23 is configured to be placed on the surface of the busbar 3 and pressed against the surface to fix the busbar 3. Figure 2 The spacers 23 are shown in a starting position in which they are not pressed against the corresponding busbar 3. For example, the tip of the spacer 23 is located below the upper side of the busbar 3. The spacer 23 can optionally have a variable cross section in the height direction z. The spacer 23 can have a smaller cross section on the side facing away from the holder 4 than on the side facing the holder 4. For example, the spacer 23 can be designed in a wedge-shaped or pyramidal shape, which increases the elasticity.

[0099] Additionally or alternatively, the spacer 23 can have a cavity 25 , which further increases the elasticity. Additionally, the spacer 23 can be formed from an elastomer, which is optionally different from the elastomer of the holder 4 , which is in particular softer.

[0100] Alternatively, the holder 4 can have a recess 14 on the side opposite the spacer 23, in particular in the height direction z, which is opposite the spacer 23 and can be designed to be similar in shape to the spacer 23. The elasticity of the spacer 23 can thereby be improved.

[0101] The holder 4 can be pressed against the busbar 3 by means of the mechanical stress of the housing 2. For example, the pressure of the holder 4 for fixing the busbar 3 can be provided by a threaded connection 28 which mechanically connects the upper housing 10 to the lower housing 11.

[0102] For this purpose, the holder 4 can be designed according to a first and a second embodiment, which are shown in more detail in the following figures.

[0103] Figure 3 Schematically, a perspective view of a first embodiment of a holder 4 is shown. The holder 4 has a holding region 5 and a contact region 6 on the wall side 31 and the busbar side 32. The holding region 5 and / or the contact region 6 have a structure 12 on the wall side 31 and / or the busbar side 32, which structure comprises at least one elevation 14 and / or recess 14, wherein the structure 12 on the busbar side 32 corresponds to a counter structure 15 for forming a joint connection.

[0104] The holding region 5 of the busbar receiving body 9 can be designed to receive at least one busbar 3. The holding region 5 has a recessed portion 14 on the wall side 31 relative to the spacer 23 on the busbar side 32, which can optionally be designed in a similar shape to the opposite protrusion 13. This increases the elasticity of the protrusion 13 on the busbar side 32 of the holder 4, which is especially formed in one piece with the holder 4. The spacer 23 is designed to press onto the surface of the busbar 3, especially with the help of the tip 33, in order to fix the busbar 3 in the busbar receiving body 9. The spacer 23 is designed, for example, in the form of a wedge or a pyramid.

[0105] Additionally or alternatively, the spacer 23 and / or the elevation 13 and / or the recess 14 have steps 22. As a result, the elasticity of the spacer 22 can be further improved.

[0106] In the contact area 6, the retainer 4 has a joint surface 7 and optionally a recessed portion 14 on the wall side 31 and / or the bus side 32. At the joint surface 7, the retainer 4 is joined to the inner wall 27 of the housing 2 on the wall side 31, wherein the joint surface 7 is optionally configured as an adhesive surface for bonding or adhesive connection. The recessed portion 14 can optionally have a sinker and / or a bore. The bore can be arranged in particular in the sinker. Relative to the recessed portion 14, the retainer 4 can have a raised portion 13 in the contact area 6, especially on the bus side 32. The raised portion 13 can be configured, for example, as a column or a cuboid. In addition, the raised portion 13 can be configured as a convex block. The raised portion 13 corresponds to the mating recessed portion 17 of the bus receiving body 9, so that the raised portion 13 can be joined to the mating recessed portion 17 to form a joint connection, especially a clamping connection. The mating recessed portion 17 can be optionally configured as a sinker. The raised portion 13 and the counter-recessed portion 17 include a joint surface 7 and a counter-joint surface 8 , respectively.

[0107] Additionally, the raised portion 13 may include a depression and the counter-recess 17 may include a corresponding projection, so that the raised portion 13 is locked in the counter-recess 17 .

[0108] Figure 4A schematic top view of a busbar side 32 of a first embodiment of a retaining element 4 with a structure 12 is shown. In this case, the retaining region 5 can be designed to be pressed against at least one busbar 3, optionally by means of a spacer 23, for fixing the busbar 3. The spacer 23 in the retaining region 5 is formed in one piece with the retaining element 4. The spacer 23 also has a step 22, so that it is designed in a wedge-shaped or pyramidal shape, which improves the elasticity. Optionally, the spacer has a tip 33. When the retaining element 4 is arranged on the busbar receiving body 9, the tip 33 of the spacer 23 presses against the surface of the busbar 3 in the height direction z, in particular against a recessed portion arranged on the surface, so that the busbar is fixed in the busbar receiving body 9.

[0109] The contact region 6 has a contact surface 7 on the busbar side 32. In addition or as an alternative, the contact region 6 has a ridge 13 which additionally comprises the contact surface 7. The ridge 13 also has a depression 20 which is alternatively designed as a bore. This can improve the elasticity. The ridge 13 can be engaged in a mating recess 17 of the busbar receiver 9 and / or the depression 20 can be engaged on a mating ridge 16 of the busbar receiver 9. This can better compensate for shear forces.

[0110] Figure 5 A perspective view of a second embodiment of the retaining member 4 is schematically shown. For the common features of the second embodiment and the first embodiment of the retaining member 4, please refer to the above description of the Figure 3 and Figure 4 Description.

[0111] In contrast to the first embodiment, the holder 4 according to the second embodiment has a structure 12 which comprises an elongated hole 19 and / or a recess 14 , in particular in the contact region, which optionally comprises a depression 20 and a bore 18 , each having different diameters.

[0112] The contact region 6 has an elongated hole 19 which is designed to engage with a corresponding mating protrusion on the current receiver 9 and / or on the inner side 27 of the housing, which corresponds to the elongated hole. The mating protrusion 16 can be, for example, a corresponding projection or a tab 29 of the busbar receiver 9 which optionally includes a mating protrusion 16. This can provide guidance when positioning the holder 4. Alternatively, the elongated hole 19 can also be designed as an elongated depression.

[0113] In addition, the contact region 6 has, in particular on the wall side 31, a recess 14 which includes the contact surface 7. In addition, the recess 14 and / or the contact surface 7 has at least one depression 20 with an optionally different, in particular reduced, diameter 21.

[0114] In addition, the depression 20 may include a bore 18. Additionally, the retaining element 4 may have a raised portion 13 corresponding to the deep cut 14, in particular on the busbar side 3. Thus, when the raised portion 13 is pressed against the mating deep cut 17 on the busbar receiving body 9, the raised portion can be pressed in stepwise, for example in a telescopic manner. This improves the elasticity of the tolerance compensation. Furthermore, when the deep cut 14 and / or the raised portion 13 and / or the depression 20 and / or the bore 18 are joined to the corresponding mating raised portion 16 and / or the mating deep cut 17, shear forces can be better offset. In addition, the retaining element 4 can be locked to the busbar receiving body 9 by means of the depression 20 and / or the bore 18.

[0115] Unlike the first embodiment, the second embodiment has at least two spacers 23 in the longitudinal direction x in the holding area 5, which are separated from each other by the gap 23. Here, the spacers 23 can be formed by an elastomer different from the holder 4. For example, the spacers 23 can be formed by an elastomer that is more elastic than the holder 4 and / or an elastomer with better thermal conductivity. In addition, the gap 23 can be filled with a heat-conducting medium. Here, the spacers 23 are configured to press against the busbar 3 with the tip 33, and then fix the busbar in the holding area 5 between the tabs 29 of the busbar receiving body 9. The spacers 23 can be configured, for example, in a wedge-shaped or pyramidal shape, wherein the tip 33 can optionally be rounded.

[0116] Additionally or alternatively, the respective spacer 23 can include a cavity 25 which further increases the elasticity.

[0117] Additionally, the holder 4 can have a bevel 26, so that the holder 4 can be placed on busbar sides 32 on busbars 3 of different sizes. The bevel 26 can be designed as an inclined portion of the holder 4 and can optionally have a wave shape.

[0118] In addition, the holding region 5 can be designed to press against a respective one of the busbars 23 in the holding region 5 by means of at least one spacer 23 in order to fix the busbar 3 .

[0119] Figure 6A schematic top view of a busbar side 32 of a second embodiment of the retaining element 4 is shown. The contact region 6 has a raised portion 13, which is optionally arranged opposite to a recessed portion on the wall side 31 of the retaining element 4. In addition, the raised portion 13 may have a mating shape corresponding to the shape of the recessed portion. The raised portion 13 optionally includes a bore 18, wherein the raised portion 13 and / or the bore 18 engages with a corresponding mating raised portion 16 and / or mating recessed portion 17 on the inner side 27 of the busbar receiving body and / or the housing. In addition, the raised portion 13 has a joining surface 7. This allows guidance to be provided when the retaining element 4 is positioned in the housing 2 and, in addition, shear forces can be better offset. For common features, please refer to the corresponding references. Figures 3 to 5 .

[0120] In addition, the contact region 6 on the busbar side 32 has a contact surface 7 which contacts a counter-contact surface 8 on the busbar receiving body 9. In addition, the contact surface 7 and / or the counter-contact surface 8 can be provided as an adhesive surface for an adhesive connection.

[0121] The holding region 5 has, along the longitudinal direction x, at least two spacers 23 which are separated by a gap 23 and are designed to press with their tips 33 against the busbar 3 in the height direction z in order to fix the busbar in the busbar receptacle 9 .

[0122] In addition, the holding element 4 has a bevel 26 which is designed to adapt the holding region 5 to busbars 3 of different sizes.

[0123] Figure 7 A schematic diagram of a first embodiment of a method for manufacturing a busbar assembly 1 is shown. In a first step S1, at least one busbar 3 is arranged in a housing 2 of the busbar assembly 1, in particular in an upper housing 10 or a lower housing 11, and / or arranged on a busbar receiving body 9, which is arranged in the housing 2, in particular in the upper housing 10 or in the lower housing 11.

[0124] In a second step S2, at least the retaining element 4 formed of plastic or elastomer is formed, in particular foamed, onto the mating engagement surface 8 on the inner side 27 of the housing 2 (in particular the upper cover 10 or the lower cover 11), and / or onto the mating engagement surface on the busbar receiving body 9, and optionally on the surface of the busbar 3.

[0125] Additionally or alternatively, in a second step S2 , the holder 4 is shaped or foamed to bear against a counter structure 15 on the inner side 27 and / or on the busbar receiving body 9 , which counter structure optionally includes a counter engagement surface 8 .

[0126] In the supplementary third step S3, the upper shell 10 and the lower shell 11 are assembled to form the housing 2. Thus, the retaining member 4 is pressed against the busbar receiving body 9, optionally by means of the mechanical stress generated when the upper shell 10 and the lower shell 11 are combined together, so that the corresponding busbar 3 is fixed in the housing 2 and / or on the busbar receiving body 9 by means of the spacer 23.

[0127] Figure 8 A schematic diagram of a second embodiment of a method for producing a busbar assembly 1 is shown.

[0128] In a first step S1 , at least one busbar 3 is arranged in the housing 2 of the busbar assembly 1 , in particular in the upper housing 10 or the lower housing 11 , and / or on a busbar receiver 9 , which is arranged in the housing 2 , in particular in the upper housing 10 or the lower housing 11 .

[0129] In an optional second step S2 , adhesive is applied to the joining surface 7 of the retaining element 4 and / or to the mating joining surface 8 on the inner side 27 of the housing 2 (in particular the upper shell 10 or the lower shell 11 ) and / or to the mating joining surface 8 on the busbar receiving body 9 .

[0130] In a third step S3, the joining surface 7 of the holder 4 is joined to the mating joining surface 8, in order to optionally establish a permanent bond of the joining surface 7 on the mating joining surface 8, for fixing the busbar 3 in the housing 2. In addition or as an alternative, the structure 12 of the holder 4 is joined to the mating structure 15 on the inner side 27 of the housing 2 (in particular the upper shell 10 or the lower shell 11), and / or to the mating structure 15 on the busbar receiving body 9, and optionally to the surface of the busbar 3. Optionally, the holding area 5 of the holder 4 is joined to the busbar 3.

[0131] Optionally, in a fourth step S4, the upper cover 10 and the lower cover 11 are assembled to form the housing 2. Thus, the retaining member 4 is optionally pressed against the busbar receiving body 9 by means of the mechanical stress generated when the upper cover 10 and the lower cover 11 are assembled together, so that the corresponding busbar 3 is fixed in the housing 2 and / or on the busbar receiving body 9 by means of the spacer 23.

[0132] To the extent applicable, all individual features shown in the embodiments may be combined with one another and / or exchanged without departing from the scope of the present invention.

[0133] Reference numerals list

[0134] 1 Busbar assembly

[0135] 2 Shell

[0136] 3 Bus

[0137] 4. Retaining parts

[0138] 5. Keep Area

[0139] 6Contact Area

[0140] 7Joint surface

[0141] 8Matching surfaces

[0142] 9 Bus receiver

[0143] 10 Upper cover

[0144] 11 Lower cover

[0145] 12Structure

[0146] 13. Raised part

[0147] 14 Digging Deep

[0148] 15 Pairing structure

[0149] 16 Paired ridges

[0150] 17 Pairing and digging deep

[0151] 18. Drilling

[0152] 19 Long hole

[0153] x longitudinal direction

[0154] y horizontal direction

[0155] z height direction

[0156] 20 sinking part

[0157] 21 Diameter

[0158] Stage 22

[0159] 23 spacing retainer

[0160] 24 Gap

[0161] 25 Cavity

[0162] 26 bevel

[0163] 27 Inside

[0164] 28 thread connection

[0165] 29 splices

[0166] 30 wall thickness

[0167] 31 Wall side

[0168] 32 Bus side

[0169] 33 Tip

[0170] S1 First step

[0171] S2 Second step

[0172] S3 Step 3

[0173] S4 Step 4

Claims

1. A retaining member (4) for fixing a busbar (3) in a housing (2), the retaining member comprising: a holding area (5) configured to hold the busbar (3); and a contact area (6) configured to fix the holding element (4) in the housing (2), It is characterized in that The joining surface (7) of the contact region (6) is designed for bonding to a mating joining surface (8) of the housing (2) and / or to a busbar receiving body (9) arranged in the housing (2).

2. The retaining element (4) according to claim 1, characterized in that The contact region (6) has a structure (12) comprising a bulge (13) and / or a recess (14), which is designed to form a joint connection with a counterstructure (15) of the housing (2) corresponding to the structure.

3. A holder (4) according to any one of the preceding claims, characterized in that The contact area (6) comprises in particular a bore hole (18) and / or an elongated hole (19), wherein the bore hole and / or the elongated hole are configured to form a joining connection together with a matching structure (15), in particular a matching raised portion (16) corresponding to the bore hole and / or the elongated hole, wherein, optionally, the raised portion (13) and / or the recessed portion (14) comprises the hole and / or the elongated hole (19).

4. The retaining element (4) according to claim 2 or 3, characterized in that: The deepening (14) and / or the raised portion (13) has a variable wall thickness (30), in particular a stepped wall thickness (30), in a height direction (z), the height direction being orthogonal to the longitudinal direction (x) and to a transverse direction (y) orthogonal to the longitudinal direction (x), wherein the deepening (14) and / or the raised portion (13) optionally includes stages (22).

5. The holder (4) according to any one of claims 2 to 4, characterized in that The deepening portion (14) and / or the raised portion (13) comprises a sinking portion (20) and / or the drill hole (18) and / or the long hole (19) in the height direction (z), wherein the sinking portion (20) and / or the drill hole (18) and / or the long hole (19) have different diameters (21) along the height direction (z), wherein the diameter (21) optionally increases or decreases along the height direction (z) with increasing depth.

6. The holder (4) according to any one of claims 2 to 5, characterized in that The engagement surface (7) is arranged in the recess (14) and / or on the raised portion (13) and optionally comprises the depression (20) and / or the bore (18) and / or the elongated hole (19).

7. A holder (4) according to any one of the preceding claims, characterised in that A spacer (23) is provided in the retaining area (5), which is made in one piece with the retaining element (4) or at least is made of a material different from that of the retaining element (4), in particular a material that is more elastic than the material of the retaining element (4), wherein the spacer (23) optionally has a contact shape and / or a cavity (25) and is configured to press against the busbar (3) for fixing.

8. A holder (4) according to any one of the preceding claims, characterised in that At least two spacers (23) are arranged in the holding region (5) along the longitudinal direction (x) of the busbar (3), wherein the spacers (23) are separated in the longitudinal direction (x) by gaps (24) and the gaps (24) are optionally filled with a heat dissipation medium.

9. A holder (4) according to any one of the preceding claims, characterised in that A slope (26) is provided in the height direction (z) relative to a plane along the transverse direction (y), and / or the retaining region (5), in particular in the transverse direction (y), has a thinner wall thickness (30) than the contact region (6).

10. A housing (2) for a busbar (3), comprising a holder (4), in particular according to any one of claims 1 to 9, wherein: The holding element (4) comprises a holding region (5) and a contact region (6), wherein the holding region (5) is configured to hold at least one busbar (3) in the housing (2), and the contact region (6) is configured to fix the holding element (4) in the housing (2). It is characterized in that The contact area (6) of the retaining member (4) has a joint surface (7), and the retaining member (4) is joined to a mating joint surface (8) corresponding to the joint surface at the joint surface (7) to fix the busbar (3) and / or is bonded to the mating joint surface (8) by means of the joint surface (7), and the mating joint surface is on the inner side (27) of the housing (2) and / or on a busbar receiving body (9) arranged in the housing (2).

11. The housing (2) according to claim 10, characterized in that The retaining element (4) and the contact area (6) of the retaining element (4) in particular have the following structure (12), the structure including a protrusion (13) and / or a recessed portion (14), the structure and a matching structure (15) together form a joint connection, the matching structure is arranged on the inner side (27) of the housing (2) and / or on the busbar receiving body (9) and corresponds to the structure (12) of the retaining element (4), the matching structure including a corresponding matching protrusion (16) and / or a matching recessed portion (17).

12. The housing (2) according to claim 10 or 11, characterized in that: The mating joint surface (8) is arranged in the mating recess (17) and / or in the mating elevation (16) and optionally comprises a depression (20) and / or a bore (18) and / or an elongated hole (19).

13. A battery or a battery system comprising the holder according to any one of claims 1 to 9 and / or the housing according to any one of claims 10 to 12.

14. A motor vehicle comprising a battery or a battery system according to claim 13.

15. A method for fixing at least one busbar (3) in a housing (2) by means of a retaining element (4), in particular a retaining element according to any one of claims 1 to 9, the method comprising the following steps: - forming, in particular foaming, the retaining element (4) onto the mating joint surface (8) of the housing (2) and / or onto a mating structure (15) on the inner side (27) of the housing (2) and / or onto a busbar receiving body (9) in the housing (2); - at least the busbar (3) is arranged in the housing (2) and fixed by means of the retaining element (4).

16. A method for fixing a busbar (3) in a housing (2) by means of a retaining element (4), in particular a retaining element according to any one of claims 1 to 9, the method comprising the following steps: - at least one busbar (3) is arranged in the housing (2) and / or on a busbar receiving body (9), which is arranged in the housing (2); - applying an adhesive to the joining surface (7) of the retaining element (4) and / or to the mating joining surface (8) of the housing (2) and / or to the busbar receiving body (9); - engaging the engagement surface (7) of the retaining element (4) with the mating engagement surface (8); The busbar (3) is fixed in the housing (2) by means of the retaining element (4).

Images