Holder for flexibly holding dual current rail

Abstract

The present disclosure relates to a holder (100) for flexibly holding a dual current rail (110) in an electric vehicle, the dual current rail (110) having two electrically conductive elongated current rails (111, 112) running parallel to each other, the current rails (111, 112) having a flat cross-section, the two current rails (111, 112) are each wrapped by an insulation (113) and stacked one on top of the other in a flat side (115)-to-flat side (115) manner to form a current rail stack (116), the holding part (100) comprising: a first part (120) made of a flexible material, which is designed to surround the dual current rail (110) about a longitudinal direction (114) of the two current rails (111, 112), the first component (120) has a first spring stiffness along two flat sides (115) of the stack of current rails (116) and a second spring stiffness along two side surfaces (117) of the stack of current rails (116) which laterally delimit the two flat sides (115); and a second part (130) surrounding the first part (120) and having a fixing element (131) for fixing the holder (100) in the electric vehicle.

Description

TECHNICAL FIELD

[0001] The invention relates to a holding for flexibly holding a dual current rail, in particular a high-voltage dual current rail, within an electric vehicle. The holding serves to support and secure the dual current rail and can be integrated into the traction path or the charging path of the electric vehicle. BACKGROUND

[0002] Due to the relative movement between the electric motor ("Electric Drive Unit") and the high-voltage (HV) battery during the operation of a battery electric vehicle (BEV), the traction path must compensate for certain movements. Due to this relative movement, stresses are formed in the aluminum conductor, which the material cannot withstand in the long term. To counter this problem with rigid conductors, targeted holdings must be used to guide and dampen these movements. SUMMARY

[0003] The technical problem addressed by the invention is therefore to complete an improved holding, which can withstand and to some extent allow the movement clearance of the rigid conductor, in order to thus reduce the stresses in the material.

[0004] This technical problem is solved by the object of the independent claim. Advantageous refinements of the invention are given in the dependent claims, the description and the figures.

[0005] The solution of the invention is based on the idea of providing a holding for a high-voltage dual current rail in an electric vehicle, by means of which the stresses in the material can be influenced in a targeted manner by the geometry and the material of the holding. With the holding presented here, the movement clearance of the rigid conductor can be withstood and to some extent allowed, so that the stresses in the material can be reduced. This limited freedom of movement is achieved in the holding disclosed here by a flexible material, for example TPE or LSR, with a specific geometry. By means of the geometry and the material, a specific spring stiffness and damping can be achieved in two spatial planes, which can thus withstand certain movements of the high-voltage dual current rail.

[0006] While a holding for a high-voltage dual current rail (HVDS) is presented in the disclosure of the present application, it is understood that the holding can also be used for other rigid conductors, for example circular rigid conductors or rigid conductors of other geometries. The holding is particularly suitable for rigid conductors, such as HVDS, in the traction path of an electric vehicle, but the holding can also be used in the charging path of an electric vehicle.

[0007] The holding presented here comprises a flexible element made of a flexible material, hereinafter referred to as first flexible element. The technical advantage of this flexible element is that with it the electric motor movements of the electric vehicle can be controlled and compensated more specifically.

[0008] According to a first aspect, the above mentioned technical problem is solved by a holding for holding a dual current rail flexibly within an electric vehicle, wherein the dual current rail has two mutually parallel running electrically conductive elongated current rails with a flat cross section, the current rails are each wrapped by an insulation and are stacked on top of each other in a flat side to flat side manner into a current rail stack, wherein the holding comprises a first component made of a flexible material, the first component is designed to surround the dual current rail around a longitudinal direction of the two current rails, wherein the first component has a first spring stiffness along an outer flat side of the current rail stack and a second spring stiffness along two side faces of the current rail stack which laterally delimit a boundary of the outer flat side, and a second component, the second component surrounds the first component and has a fixing element for fixing the holding within the electric vehicle.

[0009] The technical advantage of this holding is that the holding can withstand and to some extent allow for movement gaps within the dual current rail due to the spring stiffnesses along the two transversal to the longitudinal directions, to thereby reduce stresses in the material.

[0010] According to an exemplary embodiment of the holding, the first spring stiffness is designed to realize a predetermined movement gap space of the dual current rail perpendicular to the longitudinal direction of the two current rails in a direction along the outer flat side of the current rail stack; and the second spring stiffness is designed to realize a predetermined movement gap space of the dual current rail perpendicular to the longitudinal direction of the two current rails in a direction along the two side faces of the current rail stack.

[0011] This provides the advantage that movement gap spaces are realized in two spatial directions perpendicular to the longitudinal direction of the dual current rail. Thus, no more stresses in the material occur and premature material fatigue is prevented.

[0012] According to an exemplary embodiment of the holding, the first component has a first geometrically shaped material void along the outer flat side of the current rail stack, which allows the first component to compress and / or stretch according to the first spring stiffness along the outer flat side of the current rail stack; and the first component has a second geometrically shaped material void along the two side faces of the current rail stack, which allows the first component to compress and / or stretch according to the second spring stiffness along the two side faces of the current rail stack.

[0013] This provides the technical advantage that specific spring stiffnesses can be realized in a simple manner by the material voids. In particular, different spring stiffnesses can be set along different spatial directions according to the design of the material voids.

[0014] According to one exemplary embodiment of the holding, the first geometrically shaped material void and / or the second geometrically shaped material void form a regular pattern.

[0015] This provides the technical advantage that the spring rate can be set uniformly over the length of the material voids.

[0016] According to one exemplary embodiment of the holding part, the material voids of the first geometry form circular and quadrangular openings, wherein each circular opening follows one quadrangular opening; and the material voids of the second geometry form quadrangular openings of different width, which are arranged in front of and behind each other, respectively.

[0017] This provides the technical advantage that the material voids can be simply manufactured, for example in an injection molding method.

[0018] According to one exemplary embodiment of the holding part, the first component is made of thermoplastic elastomer (TPE) or liquid silicone rubber (LSR).

[0019] This provides the technical advantage that TPE and LSR can be used for a variety of applications and can be used with different other materials due to the increasing number of material types and the possibility of connecting with different metals and plastics. For example, LSR material types with a hardness of 20 to 70 can be used to meet different flexibility requirements.

[0020] According to one exemplary embodiment of the holding part, the second component consists of glass fiber reinforced polyamide, for example PA6 GF30.

[0021] This provides the technical advantage that PA6 can be used in a variety of ways, for example for cast and extruded components. This plastic offers excellent toughness and wear resistance, as well as good sliding properties, and can therefore be used for components that are subjected to high stresses. Due to the reinforcement with glass fibers, its strength properties are further correspondingly improved.

[0022] According to one exemplary embodiment of the holding part, the holding part has two components made of a two-component (2K) injection molded component or a two-component (2K) 3D printed component.

[0023] This provides the technical advantage that the holding part can be simply manufactured, for example by means of a two-component injection molding or 3D printing method.

[0024] According to one exemplary embodiment of the holding part, the holding part with the two components can be opened by turning over and can be placed around the dual current rail in the turned over open state.

[0025] This provides the technical advantage that the holding part can be simply fixed on and detached from the dual current rail, which simplifies maintenance and repair.

[0026] According to one exemplary embodiment of the holding part, the holding part in the flipped open state consists of two housing pieces, which comprise a part of the first component and a part of the second component, respectively.

[0027] This provides the technical advantage that the two housing pieces can be easily flipped open and flipped closed again, which reduces the installation effort.

[0028] According to one exemplary embodiment of the holding part, the first component furthermore forms a film hinge, by means of which the two housing pieces can be flipped open. Instead of a film hinge, other types of hinges can also be formed.

[0029] This provides the technical advantage that the handling is made simple by the film hinge, since the upper and lower housing pieces are connected to each other.

[0030] According to one exemplary embodiment of the holding part, the second component has a latching element, which is designed to latch the two housing pieces to each other in the flipped closed state.

[0031] This provides the technical advantage that the holding part can be fixed firmly on the double current rail without being flipped open accidentally.

[0032] According to one exemplary embodiment of the holding part, the first component has a third spring stiffness in the longitudinal direction of the two current rails, which is several times larger than the first and / or second spring stiffness, wherein the third spring stiffness is designed to dampen a movement of the two current rails in the longitudinal direction of the two current rails.

[0033] This provides the technical advantage that a firm fixation is achieved in the longitudinal direction of the current rails, while only in the two transverse directions of the current rails different movement clearance spaces are allowed.

[0034] According to one exemplary embodiment of the holding part, the first component forms a central rib along the two side faces of the current rail stack, which matches the contour of the two side faces of the current rail stack.

[0035] This provides the technical advantage that the central rib can be embedded into the gap between the two upper and lower stacked current rails and thus serves as a firm holding by the holding part.

[0036] According to one exemplary embodiment of the holding part, the fixing element has a through-hole for screwing the holding part into the electric vehicle.

[0037] This provides the technical advantage that the holding part can be fixed in the vehicle in a simple and stable manner.

[0038] According to a second aspect, the above mentioned technical problem is solved by a manufacturing method for a holder for holding a dual current rail within an electric vehicle, wherein the dual current rail has two mutually parallel running electrically conductive elongated current rails with a flat cross section, the current rails are each wrapped by an insulation and are stacked on top of each other in a flat side to flat side manner into a current rail stack, wherein the method comprises the steps of: injection molding a first part from a flexible material, the first part is designed to surround the dual current rail around a longitudinal direction of the two current rails, wherein the first part has a first spring stiffness along an outer flat plane of the current rail stack and a second spring stiffness along two side faces of the current rail stack which laterally delimit a boundary of the outer flat plane; and injection molding a second part, the part surrounds the first part and has a fixing element for fixing the holder within the electric vehicle.

[0039] The technical advantage of this method is that the holder as described above can be manufactured in a simple manner. Due to the spring stiffness in two directions transverse to the longitudinal direction, movement clearances within the dual current rail can be taken up and to some extent allowed, in order to thus reduce stresses in the material.

[0040] According to one exemplary embodiment of the method, the holder can be manufactured as a two-component injection molded part in a two-component injection molding method.

[0041] In this manner, the holder according to the first aspect described above can be manufactured as a two-component injection molded part in a simple manner. BRIEF DESCRIPTION OF DRAWINGS

[0042] The application is described in detail below with reference to embodiments and to the accompanying drawings. The drawings are: Figure 1 a three-dimensional illustration of the holder 100 according to the application with the inserted dual current rail 110 is shown; Figure 2 a three-dimensional illustration of the holder 100 according to the application in the flipped open state is shown; Figure 3 a three-dimensional illustration of the holder 100 according to the application in the flipped closed state is shown; Figure 4a a three-dimensional illustration of the first part 120 of the holder 100 made of a flexible material in the flipped closed state is shown; Figure 4b a three-dimensional illustration of the first part 120 of the holder 100 made of a flexible material in the flipped open state is shown.

[0043] Figure 5 a three-dimensional illustration of the complete assembled structure 500 of the holder 100 is shown, wherein the dual current rail 110 is placed on a bracket 501 within the vehicle.

[0044] The figures are merely schematic and are merely used to illustrate the application. Identical or functionally identical elements are provided with the same reference signs at all times. DETAILED DESCRIPTION

[0045] The detailed description set forth below refers to the accompanying drawings, which form a part of this specification, and in which specific embodiments of the present application are shown by way of illustration. It is understood that other embodiments can be utilized, and structural or logical changes can be made without departing from the scope of the present application. The following detailed description is, therefore, not to be taken in a limiting sense. Further, it is to be understood that features of the various embodiments described herein can be combined with each other, unless expressly stated otherwise.

[0046] Aspects and embodiments are described with reference to the accompanying drawings, wherein like reference numerals are used throughout and refer to like elements. For the purposes of explanation and illustration, numerous specific details are set forth in the following description to provide a thorough understanding of one or more aspects or embodiments. However, it is evident that one or more aspects or embodiments can be practiced without specific details being set forth herein in an effort to provide the most substantial explanation for one or more aspects or embodiments. In other instances, well-known structures and elements have been illustrated as known to those skilled in the art. It will be appreciated that other embodiments can be utilized and structural or logical changes can be made without departing from the scope of the present application. Therefore, the following detailed description is not to be taken in a limiting sense.

[0047] Figure 1 A three-dimensional illustration of a holding part 100 according to the application with a double current rail 110 put in is shown.

[0048] As illustrated in Figure 1 The holding part 100 is used to flexibly hold the double current rail 110 within an electric vehicle. This double current rail 110 has two mutually parallel running, electrically conductive, elongated current rails 111 and 112 with a flat cross section, which are respectively wrapped by an insulation 113, and are stacked on top of each other in a current rail stack 116 in the manner of flat sides 115 against flat sides 115. As can be seen in Figure 1 The current rail stack 116 has two outer flat sides 115, and two side faces 117 that laterally delimit the borders of the outer flat sides 115, between which the two current rails 111 and 112 are stacked. In the current rail stack 116, the two inner flat sides 115 of the current rails 111 and 112 are no longer visible. As can be seen in Figure 1 The elongated and mutually parallel running current rails 111 and 112 extend in a longitudinal direction 114. This longitudinal direction 114 coincides with or is opposite to the direction of the current flow through the double current rail 110.

[0049] The holding part 100 comprises a first component 120 made of a flexible material. The first component 120 is designed to enclose the double current rail 110 around a longitudinal direction 114 of the two current rails 111 and 112, i.e. transversely or radially to the longitudinal direction 114. The first component 120 has a first spring stiffness along the outer flat side 115 of the current rail stack 116, i.e. the outer flat side 115 runs transversely or perpendicularly to the longitudinal direction 114, and a second spring stiffness along the two side faces 117 of the current rail stack 116 which laterally delimit the outer flat side 115, said side faces 117 also running transversely or perpendicularly to the longitudinal direction 114.

[0050] The holding part 100 comprises a second component 130 which encloses the first component 120 and a fixing element 131 for fixing the holding part 100 in the vehicle or on a holder 501 in the vehicle, as illustrated in Figure 5

[0051] The first spring stiffness can be designed to achieve a predetermined movement clearance space of the double current rail 110 perpendicular to the longitudinal direction 114 of the two current rails 111, 112 in the direction along the outer flat side 115 of the current rail stack 116.

[0052] The second spring stiffness can be designed to achieve a predetermined movement clearance space of the double current rail 110 perpendicular to the longitudinal direction 114 of the two current rails 111, 112 in the direction along the two side faces 117 of the current rail stack 116.

[0053] In one embodiment, the two spring stiffnesses are different, but in another embodiment the two spring stiffnesses can also be the same.

[0054] The first component 120 has a material vacancy of a first geometry 121 along the outer flat side 115 of the current rail stack 116, which allows the first component 120 to compress and / or stretch corresponding to the first spring stiffness along the outer flat side 115 of the current rail stack 116.

[0055] The first component 120 furthermore has a material vacancy of a second geometry 122 along the two side faces 117 of the current rail stack 116, which allows the first component 120 to compress and / or stretch corresponding to the second spring stiffness along the two side faces 117 of the current rail stack 116.

[0056] The material vacancy of the first geometry 121 and the material vacancy of the second geometry 122 are located within the outer contour of the first component, for example between the inner contour and the outer contour of the first component, i.e. are enclosed by the flexible material of the first component 120, respectively, wherein the inner contour is not necessarily present. As illustrated in Figure 1 ​As illustrated, the material gap may be located between the inner and outer contours of the first component 120. The material gap may be a through-hole of flexible material passing through the first component 120, or it may be a blind hole extending non-through from one side of the first component 120 to the other side.

[0057] exist Figure 1 In one embodiment, the two geometries 121 and 122 are different, but the two geometries 121 and 122 can also be designed to be the same.

[0058] As in Figure 1 As can be seen, the material gaps in the first geometric shape 121 and the second geometric shape 122 can each form regular patterns. However, in another embodiment, the material gaps in the first and / or second geometric shapes can also have a random distribution.

[0059] As in Figure 1 As illustrated in the figure, the material gaps in the first geometry 121 can form circular and quadrilateral openings, wherein each circular opening is followed by a quadrilateral opening.

[0060] As in Figure 1 As shown in the figure, the material gaps in the second geometry 122 can form quadrilateral openings of different widths, which are arranged one after another.

[0061] The first component 120 can be made of thermoplastic elastomer (TPE) or liquid silicone (LSR). Here, the flexible material can be TPE or LSR. Other types of elastomers, silicones, or rubbers are also possible.

[0062] The second component 130 may be made of polyamide, such as glass fiber reinforced polyamide, such as PA6 GF30.

[0063] The retaining part 100 with components 120 and 130 can be made from a two-component injection molded part. Alternatively, it can be a single component manufactured using a two-component injection molding method.

[0064] As in Figure 2 As illustrated, the retaining part 100 with two components 120 and 130 can be designed to be flipped open. In the flipped-open state, the retaining part 100 can be positioned around the dual current rail 110. This allows for simple installation in a vehicle. However, a non-flippable configuration is also possible, wherein, for example, the retaining part is held onto the dual current rail during manufacturing, for example, by inserting the dual current rail.

[0065] As in Figure 2As illustrated, the retaining part 100 in the flipped-open state is made of two housing pieces 101 and 102, each housing piece comprising a portion of a first component 120 and a portion of a second component 130.

[0066] Alternatively, a design with a non-flippable opening mechanism is possible, in which the two housing pieces 101, 102 do not flip together to close, but are instead joined together, for example, by fasteners on both sides. For example, a locking mechanism or screw connection can be used to connect the two housing pieces 101 and 102 to each other.

[0067] exist Figure 1 In the embodiment illustrated, the first component 120 further forms a thin-film hinge 123, which allows the two housing pieces 101 and 102 to be flipped open. Other types of hinges may also be used as an alternative to the thin-film hinge.

[0068] As in Figure 1 As shown in the diagram, the retaining part 100 is positioned around the high-voltage dual current rail 110 and interlocks with each other for installation. Operation is simplified by the thin-film hinge 123, as the upper and lower housing pieces 101 and 102 are connected together.

[0069] As in Figure 1 As shown in the diagram, the second component 120 may have a locking element 132 for locking the two housing pieces 101 and 102 together in a flip-closed state. The locking element 132 may also be used without a hinge, for example, when the two housing pieces 101 and 102 are stacked on top of each other and their assembled position is maintained by the locking element 132.

[0070] The first component 120 may have a third spring stiffness along the longitudinal direction 114 of the two current rails 111 and 112, the third spring stiffness being greater than (in particular several times) the first and / or second spring stiffness.

[0071] The third spring stiffness can be designed to suppress or impede the movement of the two current rails 111 and 112 along their longitudinal direction 114.

[0072] The first component 120 can form a central rib 133 along the two sides 117 of the current rail stack 116, such as in Figure 3 As can be better seen, the central rib 133 matches the contours of the two side surfaces 117 of the current rail stack 116. The central rib 133 can engage within the lateral gaps of the current rail stack 116, which are formed by stacking two flat current rails 111, 112 with rounded sides, as shown in... Figure 1 As shown in the diagram.

[0073] The fixation element 131 can have a through hole or a through opening for screwing the holder 100 inside an electric vehicle. Other types of fixation, such as a snap-in fixation or a plug-in fastening, can also be realized.

[0074] Figure 2 A three-dimensional illustration of the holder 100 according to the application in a flipped open state is shown.

[0075] The holder 100 with the two parts 120 and 130 can be configured to be flip- open, as can be seen in Figure 2 Figure 2 The flipped open state is illustrated. In this flipped open state, the holder 100 can be placed around the dual current rail 110. This facilitates the installation in a vehicle.

[0076] The holder 100 in the flipped open state comprises two housing pieces 101 and 102, which comprise a part of the first part 120 and a part of the second part 130, respectively.

[0077] In Figure 2 Two housing pieces 101 and 102 are illustrated, which can be flipped open along the outer flat side 115 of the current rail stack 116. In another embodiment, the two housing pieces 101 and 102 can also be flipped open in a direction perpendicular to the outer flat side 115 of the current rail stack 116.

[0078] As illustrated in Figure 2 The holder can be made of a two-component plastic injection molding (TPE / LSR and PA6 GF30), which connects the upper and lower housing pieces 101 and 102 by means of a TPU / LSR film hinge 123.

[0079] The film hinge 123 can thus be made of a flexible material. As illustrated in Figure 2 The entire holder 100 can be made in a two-component injection molding in a single component in the flipped open state, wherein the first part 120 is the first component of the two-component injection molding and the second part 130 is the second component of the two-component injection molding.

[0080] Figure 3 A side view of the holder 100 according to the application in a flipped closed state is shown.

[0081] In the flipped closed state, both parts 120 and 130 of the holder 100 are visible, and the material voids of the first geometry 121 and the second geometry 122 on the flexible material of the first part 120 are visible.

[0082] ​The material voids of the first geometry 121 and the material voids of the second geometry 122 are located within the outer contour of the first component, for example between the inner contour and the outer contour of the first component, i.e. surrounded by the flexible material of the first component 120, respectively, wherein the inner contour is not necessarily mandatory. As illustrated in Figure 3 The material voids can be designed to be approximately in the middle between the inner contour and the outer contour of the first component 120. The material voids can be designed as through-holes or blind holes.

[0083] In the embodiment of Figure 3 the two geometries 121 and 122 are different. The two geometries have a regular pattern, respectively. The material voids of the first geometry 121 can form circular and quadrangular openings, wherein each circular opening follows one quadrangular opening, respectively. The quadrangular openings can have two parallel edges and two rounded edges, wherein the rounded edges are arranged adjacent to the circular openings, respectively.

[0084] The material voids of the second geometry 122 can form quadrangular openings with different widths, which are arranged in front of and behind each other, respectively. Thus, two quadrangulars of a parallelogram can enclose a rectangle in the center of the side.

[0085] Figure 4a A three-dimensional illustration of the first component 120 of the holder 100 made of flexible material in the flipped closed state is shown.

[0086] In the flipped closed state, the material voids of the first geometry 121 and the material voids of the second geometry 122 on the flexible material of the first component 120 are visible.

[0087] Furthermore, a film hinge 123 is illustrated, with which the holder 100 can be flipped open and flipped closed.

[0088] The first component 120 forms a flexible element, for example made of TPE / LSR material, which has a defined geometry to set the stiffness in different axial directions.

[0089] According to the chosen pattern of the material voids of the first geometry 121 and the material voids of the second geometry 122, a corresponding spring stiffness can be set.

[0090] Figure 4b A three-dimensional illustration of the first component 120 of the holder 100 made of flexible material in the flipped open state is shown.

[0091] In the flipped open state, the material voids of the first geometry 121 and the material voids of the second geometry 122 on the flexible material of the first component 120 are visible.

[0092] Furthermore a film hinge 123 is illustrated which can be used to keep the holding part 100 flipped open and flipped closed. The film hinge 123 is made of the flexible material of the first part 120. The film hinge 123 can be designed as two flaps which flexibly connect the two housing pieces 101 and 102 to each other.

[0093] Figure 5 A three-dimensional illustration of the complete assembled structure 500 including the holding part 100 and the dual current rail 110 on a bracket 501 in a vehicle is shown.

[0094] The holding part 100 is here fixed around the dual current rail 110 and mounted on a bracket 501 inside a vehicle. Fixation can be done using a threaded connection. The fixation element 131 can be a metal bushing hole with a screw to fix the holding part on the bracket. The embedded bushing for the threaded connection can be made by overmolding to prevent settlement or creep of the threaded connection.

[0095] The present disclosure also relates to a method of manufacturing a holding part as described above with reference to Figures 1 to 5 The method comprises the following steps: injection molding a first part from a flexible material, the first part being designed to surround a dual current rail around a longitudinal direction of the two current rails, wherein the first part has a first spring stiffness along the flat sides of the current rail stack which are outside and a second spring stiffness along the side faces of the current rail stack which laterally delimit the boundaries of the two outside flat sides.

[0096] injection molding a second part, the second part surrounding the first part and having a fixation element for fixing the holding part inside an electric vehicle.

[0097] For example, the holding part can be manufactured as a two-component injection molded component in a two-component injection molding method.

[0098] As described above, the method allows manufacturing the holding part 100 as a two-component injection molded piece in a simple manner.

[0099] List of reference signs 100 holding part 101 first housing piece 102 second housing piece 110 dual current rail 111 first current rail 112 second current rail 113 insulation part 114 longitudinal direction of the two current rails 115 flat side of the current rail 116 current rail stack 117 side face of the current rail stack 120 first component 121 first geometric material void 122 second geometric material void 123 thin film hinge 130 second component 131 securing element 132 latching element 133 central rib of the first component 500 fully assembled structure 501 holder

Claims

1. A holding part (100) for flexibly holding double current rails (110) in an electric vehicle, wherein The double current rail (110) has two electrically conductive, elongated current rails (111, 112) running parallel to each other, which current rails (111, 112) have a flat cross section, which current rails (111, 112) are respectively wrapped by an insulation (113) and are stacked on top of each other in a flat side (115) against flat side (115) manner as a current rail stack (116), wherein the holding part (100) comprises: a first component (120) made of a flexible material, which first component (120) is designed to surround the double current rail (110) around the longitudinal direction (114) of the two current rails (111, 112), wherein the first component (120) has a first spring stiffness along the outer flat sides (115) of the current rail stack (116) and a second spring stiffness along the two side faces (117) of the current rail stack (116) which laterally delimit the boundaries of the two outer flat sides (115); and a second component (130) which surrounds the first component (120) and has a fixing element (131) for fixing the holding part (100) within an electric vehicle.

2. The holding part (100) according to claim 1, wherein the first spring stiffness is designed to realize a predetermined movement clearance space of the double current rail (100) perpendicular to the longitudinal direction (114) of the two current rails (111, 112) in the direction of the outer flat sides (115) of the current rail stack (116); and wherein the second spring stiffness is designed to realize a predetermined movement clearance space of the double current rail (100) perpendicular to the longitudinal direction (114) of the two current rails (111, 112) in the direction of the two side faces (117) of the current rail stack (116).

3. The holding part (100) according to claim 1 or 2, wherein the first component (120) has a first geometrically shaped material void along the outer flat sides (115) of the current rail stack (116), which material void allows the compression and / or stretching of the first component (120) according to the first spring stiffness along the outer flat sides (115) of the current rail stack (116); and wherein the first component (120) has a second geometrically shaped material void along the two side faces (117) of the current rail stack (116), which material void allows the compression and / or stretching of the first component (120) according to the second spring stiffness along the two side faces (117) of the current rail stack (116).

4. The holding portion (100) according to claim 3, wherein The first geometrically shaped material void (121) and / or the second geometrically shaped material void (122) form a regular pattern.

5. The holding part (100) according to claim 3 or 4, wherein the first geometrically shaped material void (121) forms circular and quadrangular openings, wherein each circular opening respectively follows one quadrangular opening; and the second geometrically shaped material void (122) forms circular and quadrangular openings, wherein each circular opening respectively follows one quadrangular opening. The material voids of the second geometry (122) form quadrangular openings of different widths, which are arranged in succession in front of and behind one another.

6. The holding portion (100) according to any one of the preceding claims, wherein The first component (120) is made of thermoplastic elastomer (TPE) or liquid silicone rubber (LSR).

7. The holding portion (100) according to any one of the preceding claims, wherein The second component (130) is made of glass fiber reinforced polyamide (PA6GF30).

8. The holding portion (100) according to any one of the preceding claims, wherein The holder (100) with the two components (120, 130) is made of a two-component (2K) injection-molded part.

9. The holding portion (100) according to any one of the preceding claims, wherein The holder (100) with the two components (120, 130) can be opened by flipping over and can be placed around the double current rail (110) in the flipped-over open state.

10. The holding portion (100) according to claim 9, wherein The holder (100) in the flipped-over open state is made of two housing pieces (101, 102), which each comprise a portion of the first component (120) and a portion of the second component (130).

11. The holding portion (100) according to claim 10, wherein The first component (120) furthermore forms a film hinge (123) by means of which the two housing pieces (101, 102) can be flipped over.

12. The holding portion (100) according to claim 10 or 11, wherein The second component (120) has a latching element (132) which is designed to latch the two housing pieces (101, 102) to one another in the flipped-over closed state.

13. The holder (100) according to any one of the preceding claims, wherein The first component (120) has a third spring stiffness in the longitudinal direction (114) of the two current rails (111, 112), which is several times greater than the first and / or second spring stiffness, wherein the third spring stiffness is designed to suppress a movement of the two current rails (111, 112) in the longitudinal direction (114) of the two current rails (111, 112).

14. The holding portion (100) according to any one of the preceding claims, wherein The first component (120) forms a central rib (133) along the two side faces (117) of the current rail stack (116), which matches the contour of the two side faces (117) of the current rail stack (116).

15. The holding portion (100) according to any one of the preceding claims, wherein The fixing element (131) has a through-hole for screwing the holder (100) into an electric vehicle.

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