CN116639062A - Motor vehicle component made of fiber composite plastic, protection system and manufacturing method - Google Patents

Motor vehicle component made of fiber composite plastic, protection system and manufacturing method Download PDF

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Publication number
CN116639062A
CN116639062A CN202310143387.5A CN202310143387A CN116639062A CN 116639062 A CN116639062 A CN 116639062A CN 202310143387 A CN202310143387 A CN 202310143387A CN 116639062 A CN116639062 A CN 116639062A
Authority
CN
China
Prior art keywords
motor vehicle
vehicle component
sensor
point
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310143387.5A
Other languages
Chinese (zh)
Inventor
J·劳施
O·斯托尔
F·于尔林斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of CN116639062A publication Critical patent/CN116639062A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2072—Floor protection, e.g. from corrosion or scratching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/0207—Wire harnesses
    • B60R16/0215—Protecting, fastening and routing means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
    • B29C70/885—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding with incorporated metallic wires, nets, films or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B62D29/043—Superstructures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • B60R16/0234—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions related to maintenance or repairing of vehicles

Abstract

The invention relates to a motor vehicle component, in particular a floor component, made of a fiber composite plastic, comprising at least one electrically conductive sensor line (120) which is laid inside a surface section for monitoring the component, such that the sensor line (120) extends from a starting point (A) to a turning point (W) and from the turning point (W) to an end point (E) located in the vicinity of the starting point (A), wherein the line run between the turning point (W) and the end point (E) is parallel to the line run between the starting point (A) and the turning point (W) and the parallel distance is at most 10mm. The invention also relates to a protection system having such a motor vehicle component and to a method for producing such a motor vehicle component.

Description

Motor vehicle component made of fiber composite plastic, protection system and manufacturing method
Technical Field
The invention relates to a motor vehicle component made of fiber composite plastic, having at least one electrically conductive sensor line for component monitoring, according to the preamble of claim 1. The invention also relates to a protection system having such a motor vehicle component and to a method for producing such a motor vehicle component.
Background
DE10 2017 206 663A1 describes a protective plate which is provided for use on a battery housing of an electric vehicle and which is made of plastic, for example. The protective plate has at least one deformation sensor. The deformation sensor includes a conductive coating applied to the protective plate. The coating which can be electrically conductive is advantageously made of a material or alloy having a relatively low temperature coefficient. The electrically conductive coating is preferably a conductor track/conductor path, which extends between the first and the second terminal within a section and is laid in a plurality of turns within the section. The deformation sensor is connected to the evaluation circuit via a first terminal and a second terminal. The evaluation circuit measures the ohmic resistance of the coated part of the deformation sensor at regular time intervals. When this section of the protective plate is deformed, the coating portion is also deformed. As long as no significant change in ohmic resistance can be confirmed, no deformation of the protective plate is considered to exist in the relevant section.
However, metal conductor tracks are very susceptible to electromagnetic interference, which may originate, for example, from an induction coil laid on the road surface of a vehicle, or which occurs when a magnetic object is driven over. Such disturbances can have adverse effects and in particular lead to evaluation errors.
Disclosure of Invention
The invention discloses a possibility of how electromagnetic interference effects can be reduced in a related motor vehicle component.
This object is achieved by a motor vehicle component according to claim 1 of the present invention. The invention also extends to a protection system and to a method of manufacture, using the appended claims. Additional features of the invention will be set forth in the dependent claims, in the description of the invention which follows (which also explicitly includes exemplary and optionally illustrated features), and in the drawings, both likewise and in a meaningful sense for all subjects of the invention.
The motor vehicle component according to the invention is formed or produced at least in part from a fiber-reinforced plastic (FVK), in particular from a glass fiber-reinforced plastic (GFK) or a carbon fiber-reinforced plastic (CFK).
The motor vehicle component according to the invention is preferably constructed flat or planar, wherein this means in particular a substantially two-dimensional design with a smaller thickness than planar development. The motor vehicle component according to the invention is in particular constructed in the form of a shell or a plate.
The motor vehicle component according to the invention has at least one electrically conductive sensor line. The sensor wire is formed from a wire blank or the like (so that it is definitely not a conductive coating). The sensor wire may be disposed on an outer surface of the motor vehicle component. In particular, the sensor line is arranged in the interior of the motor vehicle component, i.e. is almost integrated into the motor vehicle component, and is thereby protected from external influences. The sensor lines are laid inside a surface section which can extend over the entire motor vehicle component or only over a partial region (section) of the motor vehicle component and within which component monitoring, in particular deformation monitoring (as described in DE10 2017 206 663a 1) or temperature monitoring, can be carried out. This is achieved by means of an evaluation device (electrical or electronic) or the like, which recognizes or detects a change in the resistance of the sensor line. For this purpose, the sensor wire is connected or coupled to the evaluation device in a suitable manner, in particular at its wire end. The relevant surface section (sensing region) is in particular rectangular or at least substantially rectangular (see top view).
The sensor wire may be made of metal, such as constantan, or may also be made of carbon. The wire diameter (or diameter equivalent) of the sensor wire is preferably in the range of 10 μm to 100 μm, in particular in the range of 20 μm to 40 μm or in the range of 50 μm to 100 μm. The sensor wire may have an insulation, for example an insulating varnish, at least in sections.
According to the invention, the sensor conductor extends (in the relevant surface section) from the starting point to the turning point and from the turning point to the end point located near the starting point, wherein the conductor run between the turning point and the end point is at least substantially parallel to the conductor run between the starting point and the turning point, the distance or parallel distance (between the two conductor sections) being at most 10mm, in particular at most 5mm. Preferably, a constant or at least substantially constant parallel distance of at most 10mm or at most 5mm is provided (between the two wire sections).
Thus, the sensor wire is routed forward from the start point to or forward to the turning point and from the turning point rearward to or rearward to the end point located near the start point. The starting point is located in particular at one wire end of the sensor wire and the terminating point is located in particular at the other wire end of the sensor wire. Preferably, the start and end points and/or the wire ends of the sensor wires are arranged next to each other directly or as close as possible, i.e. almost immediately adjacent, preferably at a distance of at most 40mm, preferably at most 20mm and especially at most 10mm. The sensor wire extends almost in the form of a loop or coil (Masche) from the starting point to the turning point and parallel thereto from the turning point to the ending point. The so-called turning point is located approximately in the middle of the length of the wire or approximately halfway between the start point and the end point. At the turning point, the sensor conductor is separated to some extent, independently of the conductor course, into two conductor sections of identical length, which may be referred to as a forward guide or forward run and a rearward guide or rearward run.
Furthermore, the forward lead or the forward run of the sensor wire, i.e. the wire run between the starting point and the turning point, and the backward lead or the backward run of the sensor wire, i.e. the wire run between the turning point and the end point, are parallel or at least substantially parallel. Furthermore, the distance or parallel distance between the forward and rearward guides is at most 10mm, in particular at most 5mm. Preferably, a distance or parallel distance of at least 1.0mm is provided. In particular, a constant distance, i.e. a distance between the relevant conductor sections which remains constant or at least substantially constant in the conductor course, is provided.
The above description of the invention is to be understood in particular as meaning that the forward and rearward guides of the sensor wire are located at the same component level, are arranged parallel to one another with reference to the plan view of the motor vehicle component and in particular do not intersect one another.
The arrangement of the sensor wires according to the invention (with the wire runs described above) reduces the susceptibility to electromagnetic interference. This applies in particular to disturbances due to voltage induction in the sensor wires. It may be stated that disturbances of the line sections running alongside one another or running alongside one another can be damped or even offset one another. In other words, the arrangement or laying of the sensor wires according to the invention results in a reduction of electromagnetic interference effects caused by the structure or caused by the hardware. Thus, the adverse effects of electromagnetic interference effects and electromagnetic compatibility (EMV) are significantly reduced without costly evaluation, in particular without interference compensation.
The motor vehicle component according to the invention may have a sandwich structure with a core layer/sandwich layer and cover layers arranged on both sides of the core layer. The core layer is in particular a honeycomb or foam structure formed from plastic. The cover layer is formed in particular from a fibre composite plastic (e.g. CFK or GFK). It is preferably provided that the sensor line is arranged in one of the cover layers, in particular in the (upper) cover layer facing the motor vehicle or the vehicle component to be protected, i.e. the sensor line is located in the interior of the cover layer or is integrated into the cover layer. Preferably, at least the relevant cover layer is designed as a multilayer, wherein this means in particular a multilayer structure consisting of a plurality of (i.e. at least two) mutually connected fiber semifinished layers. Furthermore, it is preferably provided that the sensor line is arranged between two layers of the multilayer cover layer, i.e. is embedded between two layers of the multilayer structure lying one above the other or against each other. If a plurality of sensor wires are provided (see below), these are preferably arranged between the same layers and thus are located almost at the same component level. A method for producing such a motor vehicle component having a sandwich structure will also be described below.
Preferably, the line run between the starting point and the turning point and the line run between the turning point and the end point is U-shaped, or at least substantially U-shaped, in particular with reference to a top view. This means that the sensor lines run inside the relevant, in particular rectangular (see above), surface section in the manner of individual U-shaped loops or coils from the starting point to the turning point and (parallel to this) from the turning point to the end point. The U-shaped conductor track enables a well-sensed monitoring (sensing) of the relevant surface section. Preferably, the U-shaped sides are arranged linearly and in parallel. In particular, the U-shaped side edge is also designed to be several times longer than the U-shaped bend connecting the U-shaped side edge, so that the sensor wire has four relatively long and parallel-extending partial sections. This simplifies the laying of the sensor lines (in particular in comparison with the windings mentioned at the beginning) in the production of motor vehicle components, and is advantageous on the one hand for effective reduction of electromagnetic interference effects.
The motor vehicle component according to the invention may have a plurality of surface sections or partial areas, in particular rectangular or substantially rectangular surface sections, in each of which at least one sensor conductor, in particular only one individual sensor conductor, is arranged, which has a corresponding conductor track (as described above). (the foregoing description applies similarly to each sensor wire therein.) thus, there are almost multiple sensing areas that enable component monitoring in a localized dispensing relationship. Furthermore, a support and/or fastening of the motor vehicle component can be achieved between the surface sections. It is therefore preferably provided that the motor vehicle component has support elements which are arranged between the surface sections, which are located in particular on the upper side (see below), and which are designed, for example, as ribs, arches or the like. The support element may be an injection-molded part, a hollow profile or the like, which is glued, for example.
The motor vehicle component according to the invention is preferably designed as a plate-shaped floor component. In other words, the motor vehicle component according to the invention is preferably a plate-shaped bottom component. Such a underbody component is used in particular for mechanically protecting the underbody of a motor vehicle and/or vehicle components, such as a power battery, which are arranged in the region of a vehicle floor or underbody. Such a bottom member may also be referred to as a underbody shield. The plate-like bottom element can have a lower side facing the roadway and an upper side facing the motor vehicle or the vehicle component to be protected. The support element (see above) may be arranged on the upper side. The plate-shaped base member may have a rectangular or at least substantially rectangular contour (with reference to a top view), in particular with a side length of 1000mm to 2000 mm.
A protection system for a motor vehicle according to the invention, wherein the protection system, in particular a floor protection system, comprises at least:
according to the invention, the motor vehicle component is designed in particular as a plate-shaped floor component; and
the (at least one) evaluation device or the like, which is connected to or to which at least one sensor line of the motor vehicle component is connected, is designed to monitor the relevant surface section (sensing region) of the motor vehicle component by means of detecting the resistance of the sensor line, wherein this is in particular deformation monitoring and/or temperature monitoring.
The arrangement or laying of the sensor wires according to the invention results in a reduction of electromagnetic interference effects (as described above), so that relatively simple evaluation circuits, for example wheatstone bridges, can be used in the evaluation device. In particular, no costly interference compensation is provided.
As described above, the motor vehicle component according to the invention can have a plurality of sensor lines which are arranged in different surface sections or partial regions, so that there are almost a plurality of sensing regions. In this case, the evaluation device is preferably also designed to monitor the sensing region independently of one another by means of a corresponding sensor line or a corresponding plurality of sensor lines, so that possible resistance changes can be locally distributed or locally located. Optionally, a plurality of evaluation devices can be provided, in particular such that each sensing region and/or each sensor line is assigned an evaluation device.
Furthermore, the susceptibility to electromagnetic interference or electromagnetic compatibility can be improved in that the sensor lines are connected to an analog-to-digital converter arranged next to the motor vehicle component, which in turn is connected to or connected to the evaluation device via a digital, optionally also wireless, data connection. The analog-digital converter can be arranged or fastened on the motor vehicle component and is connected in particular directly (i.e. without further connecting cables) to the sensor wire or to the wire end thereof. If there are multiple sensor wires, an analog-to-digital converter may be provided for each sensor wire.
The method according to the invention for manufacturing a motor vehicle component having a sandwich structure (see above) comprises at least the following steps:
a layered structure/layered structure or a stacked structure is produced, comprising a core layer and two cover layers, wherein the cover layers are each formed from a plurality of layers, i.e. at least two layers, of a fiber preform (fiber preform layer), which may already have a plastic matrix, and wherein at least one sensor conductor is arranged in one of these cover layers, in particular in the upper cover layer (see above), between two layers lying one above the other, by applying the sensor conductor (or sensor conductors) in a corresponding conductor track (as described above) to the previously placed layer (fiber preform layer), and if appropriate fastening it (for example by means of a suture or adhesive), and then applying or setting a further layer (fiber preform layer); and is also provided with
Pressing and, if appropriate, curing the layered structure, for example in a pressing tool or the like, in particular in a heated pressing tool, or by means of vacuum compression.
The method according to the invention therefore provides that at least one sensor line is integrated into one of the cover layers with a predetermined line profile (as described above) when the layered structure is produced. Thus, the sensor wires are not "applied" but are instead introduced or embedded into the relevant cover layer (between the two layers of fiber semi-finished product).
Drawings
The invention will be described in more detail below, in a non-limiting manner, with reference to the accompanying drawings. The features shown in the drawings and/or described below may be general features of the invention and may be modified accordingly, even if not relevant to a particular combination of features.
Fig. 1 shows a schematic side view of a motor vehicle component according to the invention;
fig. 2 shows a schematic sectional view of the upper cladding of the motor vehicle component according to the section line (A-A) indicated in fig. 1.
Detailed Description
Fig. 1 shows a motor vehicle component 100 according to the invention, which is designed as a plate-shaped underbody component or underbody shield and is attached to a designated vehicle-side structure 200 (for example, a vehicle underbody or a power battery arranged in the underbody region). The plate-shaped motor vehicle component or underbody component 100 (see plan view from below or above) has a rectangular contour or rectangular outer shape and has a lower side facing the roadway and an upper side facing the vehicle-side structure 200. The associated motor vehicle component or underbody 100 is supported and spaced apart from the vehicle side structure or vehicle structure 200 by a plurality of wall-like or rib-like support elements 130. Between the motor vehicle component or underbody component 100 and the vehicle-side structure 200, a plurality of cavities are formed, which enable a small deformation of the motor vehicle component or underbody component 100 without compromising the vehicle-side structure 200 and thus can also be referred to as deformation chambers.
The support element 130 may be designed as an integral part of the motor vehicle component or the floor component 100 and may be arranged at its upper side. The motor vehicle component or the underbody 100 can also be fastened to the vehicle-side structure 200 through the support element 130, for example by means of a screw connection.
The plate-shaped motor vehicle component or underbody component 100 has a sandwich structure with a core layer 111 and cover layers 112, 113 arranged on both sides of the core layer. The cover layers 112, 113 are formed from multiple layers of fiber composite plastic. In one of the cover layers, in particular in the upper cover layer 113 of the vehicle-side structure 200, for the purpose of component monitoring, a plurality of electrically conductive sensor lines are arranged in such a way that each of these is located in a different surface section or partial region between two adjacent support elements 130 and forms a sensing region. Thus, the motor vehicle component or the underbody component 100 has a plurality of sensing areas corresponding to the face sections or deformation chambers between the support elements 130. Preferably, these sensor lines are already arranged or embedded in the production of the motor vehicle component or the underbody component 100 between two mutually overlapping layers or in the intermediate region between two mutually adjoining layers of the relevant cover layer, as described above.
Fig. 2 shows a horizontal section through the upper cover layer 113 for a surface section between two adjacent support elements 130, so that the sensor lines 120 arranged in the interior of the cover layer 113 can be seen in this surface section or partial region. The relative surface sections between the support elements 130 indicated with dashed lines are rectangular. The following description also applies to other surface sections or partial areas between the further support element 130 and the sensor wires arranged therein.
The electrically conductive sensor line 120 (see the top view shown) extends in a U-shape from the starting point a to the turning point W and in parallel therewith from the turning point W to the end point E located in the vicinity of the starting point a, in particular immediately adjacent to the starting point a. In other words, the sensor wire 120 is routed or routed forward in a U-shaped loop or loop from the starting point a to the turning point W (see reference H) and, parallel thereto, from the turning point W, which is to some extent a reversing point, back to the end point E (see reference R).
Thus, the line run between the turning point W and the end point E is parallel or at least substantially parallel to the line run between the start point a and the turning point W or between the turning point W and the start point a. (this line track of the sensor line 120 can be associated with an electrical double line which runs in a U-shape and whose conductors are electrically or galvanically connected at the turning point W). It is furthermore provided that two wire sections parallel to one another, namely a forward guide H and a rearward guide R, have a parallel distance S of at most 10mm. As described above, such placement or laying of the sensor wires 120 reduces susceptibility to electromagnetic interference and/or improves electromagnetic compatibility without taking other measures.
The sensor line 120 is connected at its line ends, in particular at the start point a and the end point E, to an evaluation device, which recognizes the change in resistance of the sensor line 120. As shown in fig. 2, the wire ends of the sensor wire 120 may also continue to lead beyond the start point a and end point E and connect with the contact tabs 121, 122 or the like. These contact sheets 121, 122 may also be arranged directly at the start point a and the end point E. Preferably, the contact tabs 121, 122 are also located between the layers of the cover layer (i.e. the contact tabs 121, 122 are embedded in the cover layer 113 together with the sensor wires 120) and are accessible from the outside (as described in DE10 2021 106 171.7).
In the surface section shown in fig. 2, a plurality of sensor lines 120 can also be arranged, which are each arranged in a line pattern according to the invention, in particular in a U-shaped line pattern. It can be provided here that the sensor conductors have an opposite U-shaped conductor track and are arranged or laid in a comb-like manner.

Claims (10)

1. A motor vehicle component (100) made of a fiber composite plastic, having at least one electrically conductive sensor line (120) which is laid inside a surface section for monitoring the component such that the sensor line (120) extends from a starting point (a) to a turning point (W) and from the turning point (W) to an end point (E) located in the vicinity of the starting point (a), wherein the line run between the turning point (W) and the end point (E) is parallel to the line run between the starting point (a) and the turning point (W) and the parallel distance is at most 10mm.
2. Motor vehicle component (100) according to claim 1, characterized in that a constant parallel distance is provided.
3. Motor vehicle component (100) according to any of the preceding claims, characterized in that it has a sandwich structure with a core layer (111) and cover layers (112, 113) arranged on both sides of the core layer (111), wherein a sensor wire (120) is arranged in one of the cover layers (113).
4. A motor vehicle component (100) according to claim 3, characterized in that the associated cover layer (113) is designed as a multilayer, wherein the sensor wire (120) is arranged between two layers of the multilayer cover layer (113).
5. Motor vehicle component (100) according to any of the preceding claims, characterized in that the wire run between the starting point (a) and the turning point (W) and the wire run between the turning point (W) and the end point (E) are U-shaped.
6. The motor vehicle component (100) according to any of the preceding claims, characterized in that there are a plurality of face sections in each of which a sensor wire (120) having a corresponding wire course is arranged.
7. The motor vehicle component (100) according to claim 6, characterized in that there are support elements (130) arranged between the face sections.
8. The motor vehicle component (100) according to any of the preceding claims, characterized in that the motor vehicle component (100) is designed as a plate-shaped bottom component.
9. A protection system for a motor vehicle, the protection system comprising:
-a motor vehicle component (100) according to any one of claims 1 to 8;
-an evaluation device connected to at least one sensor wire (120) of the motor vehicle component (100), the evaluation device being designed for monitoring the relevant surface section of the motor vehicle component (100) by means of detecting the resistance of the sensor wire (120).
10. A method for manufacturing a motor vehicle component (100) according to any one of claims 4 to 8, the method comprising the steps of:
-producing a layered structure comprising a core layer (111) and two cover layers (112, 113), wherein the two cover layers (112, 113) are each formed from a multi-layered fiber semifinished product, and wherein at least one sensor wire (120) is arranged in one cover layer (113) between two layers lying one above the other, by applying the sensor wire (120) with a corresponding wire course to the previously placed layers and then applying further layers; and is also provided with
-pressing the layered structure.
CN202310143387.5A 2022-02-22 2023-02-21 Motor vehicle component made of fiber composite plastic, protection system and manufacturing method Pending CN116639062A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022104126.3A DE102022104126A1 (en) 2022-02-22 2022-02-22 Motor vehicle component made of fiber-reinforced plastic with at least one electrically conductive sensor wire, protection system and manufacturing method
DE102022104126.3 2022-02-22

Publications (1)

Publication Number Publication Date
CN116639062A true CN116639062A (en) 2023-08-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310143387.5A Pending CN116639062A (en) 2022-02-22 2023-02-21 Motor vehicle component made of fiber composite plastic, protection system and manufacturing method

Country Status (2)

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CN (1) CN116639062A (en)
DE (1) DE102022104126A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007003503A1 (en) 2007-01-24 2008-07-31 Daimler Ag Safety device for fuel cells
DE102013006809A1 (en) 2013-04-19 2014-10-23 Daimler Ag Battery for a car
DE102014117313A1 (en) 2014-11-26 2016-06-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Housing part of a housing of a high-voltage component of a motor vehicle
DE102017206663A1 (en) 2017-04-20 2018-10-25 Robert Bosch Gmbh Battery pack and electric vehicle
DE102017119153A1 (en) 2017-08-22 2019-02-28 Mayser Holding Gmbh & Co. Kg Protective device for a component with kaptiler collision detection
DE102021106171B4 (en) 2021-03-15 2022-12-01 Audi Aktiengesellschaft Composite component with sensor wire

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