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EP-4568833-B1 - LAYERED ARRANGEMENT FOR LINING AN INTERIOR SPACE, INTERIOR-SPACE DAMPING FOR A MOTOR VEHICLE, AND MOTOR VEHICLE

EP4568833B1EP 4568833 B1EP4568833 B1EP 4568833B1EP-4568833-B1

Inventors

  • Mzyk, Oliver

Dates

Publication Date
20260513
Application Date
20230703

Claims (10)

  1. Layer arrangement (5) for lining an interior (7), in particular of a motor vehicle (1), comprising a functional layer (9), an intermediate layer (11) and a cover layer (13), wherein - the functional layer (9) comprises a composite material (9.1) made of a matrix material (15) and soft magnetic particles (17) embedded therein, wherein - the intermediate layer (11) comprises a foam material (11.1), wherein - the cover layer (13) is a textile fabric (13.1), wherein - the cover layer (13) has a visible surface (13.2).
  2. Layer arrangement (5) according to claim 1, wherein - the intermediate layer (11) comprises soft magnetic particles (17).
  3. Layer arrangement (5) according to claim 2, wherein the soft magnetic particles (17) of a layer selected from the functional layer (9) and the intermediate layer (11) are aligned so as to be - parallel or - amorphous.
  4. Layer arrangement (5) according to claim 2 or claim 3, wherein - the soft magnetic particles (17) of the functional layer (9) are aligned in a first direction (A), wherein - the soft magnetic particles (17) of the intermediate layer (11) are aligned in a second direction (B) that is different from the first direction (A).
  5. Layer arrangement (5) according to claim 4, wherein - the first direction (A) and the second direction (B) are oriented orthogonally to each other.
  6. Layer arrangement (5) according to any of claims 2 to 5, wherein - the matrix material (15) comprises silicone (15.1), and/or - the soft magnetic particles (17) comprise a ferromagnetic material, and/or - the textile fabric (13.1) comprises a felt (13.3) and/or a fabric carpet (13.4).
  7. Layer arrangement (5) according to any of claims 2 to 6, wherein - the soft magnetic particles (17) comprise a material selected from a group of soft magnetic nickel-iron alloys (18).
  8. Layer arrangement (5) according to any of the preceding claims, wherein - a further layer (19) made of a material selected from a group of soft magnetic nickel-iron alloys (18) is arranged between the intermediate layer (11) and the functional layer (9).
  9. Interior sound insulation (3) for a motor vehicle (1), comprising a layer arrangement (5) according to any of the preceding claims, wherein - the interior sound insulation (3) can be attached to a motor vehicle (1) by means of the functional layer (9).
  10. Motor vehicle (1) comprising interior sound insulation (3) according to claim 9.

Description

The invention relates to a layer arrangement for lining an interior, in particular a motor vehicle, an interior damping system for a motor vehicle with such a layer arrangement, and a motor vehicle with such interior damping. In addition to a high-voltage battery with a battery management system and an electric motor, an electric vehicle has a large number of other electrical and electronic components. Since the electric vehicle has limited installation space, the high-voltage battery, in particular, is located beneath the vehicle interior. Therefore, due to space constraints, it is positioned close to the vehicle occupants. At the same time, due to increasing performance requirements, higher current levels are also necessary, especially when operating the high-voltage system of the electric vehicle. This can result in vehicle occupants being exposed to a magnetic field. In particular, the magnetic field can interfere with personal and life-support devices, such as insulin pumps or pacemakers. Therefore, it is necessary to shield the vehicle occupants from magnetic fields, while at the same time ensuring sufficient acoustic damping of the vehicle interior. A protective device for shielding people against magnetic fields is, for example, made of DE 198 53 239 A1 The protective device comprises a housing formed from several walls, the walls containing soft magnetic particles. The soft magnetic particles can be embedded, in particular in a manner not further described, in the housing itself or in a coating of the housing. The German patent application DE 10 2014 221 572 A1 Disclosing a housing for a control unit, the housing being made of a composite material containing ferromagnetic particles for shielding magnetic fields. The housing may be multi-part and include a lid for closing an opening. The composite material may be a plastic with additives. These additives may be ferromagnetic particles. Ferromagnetic particles are magnetizable and, alternatively or additionally, magnetic. The ferromagnetic particles may at least partially comprise ferrite particles. Ferrite is a particularly readily magnetizable material. This allows for a thinner housing wall. The German patent application DE 10 2004 034 225 A1 Disclosing a shielding jacket for an electrical or electronic component, it comprises a layer containing a magnetically shielding material and a plurality of particles made of a magnetizable material arranged on one side of this layer. Preferably, the layer containing the magnetically shielding material is formed from a lead foil. The magnetizable particles can, for example, consist of magnetite. Additionally, the shielding jacket can contain barium sulfate particles on the same side of the magnetically shielding foil as the magnetizable particles. The German utility model DE 202014105495 U1 Disclosing a lining structure attached to a vehicle body, comprising a layered structure comprising a number of layers (16, 18, 20, 22) and a transmission element (8) designed for contactless transmission of electrical energy to a consumer (6), in particular a heating element in the vehicle (2), wherein the transmission element (8) is made of an electrically conductive material and is integrated into the layered structure (14). The German patent application DE 10 2011 056 807 A1 Disclosing a magnetic field shield for electromagnetic fields, preferably in the frequency range of 50 Hz to 200 kHz, essentially consisting of a composite sheet formed from at least three superimposed layers, wherein at least one of the layers consists of electrical steel or electrical steel strip. To create such a lightweight, effective, and cost-efficient magnetic field shield, it is proposed that at least one of the layers consist of steel sheet and at least one of the layers consist of plastic and/or elastomer, wherein the at least one layer of plastic and/or elastomer bonds the at least one layer of electrical steel/electrical steel strip and the at least one layer of steel sheet together by a material bond. The European patent application EP 3 076 775 A1 Disclosure reveals a sound-absorbing film that is highly effective in absorbing noise from magnetic and/or electric fields, wherein the sound-absorbing effect functions over wider bandwidths. This film is constructed as follows: a sound-absorbing film on which at least two layers are stacked, wherein the sound-absorbing film contains a magnetic layer with a magnetic material and another layer of a sound-absorbing fabric in which metal fibers are arranged on the film, and the common logarithmic value of the surface resistance of at least one side of the sound-absorbing fabric is between 0 and 6. The PCT patent application WO2017/218142 A1 This reveals a floor mat with a reduced tuft profile on the reverse side of the textile component. The floor mat consists of a textile component and a base component. The textile component comprises top yarn tufted through a primary backing layer. The reduc