Magnetic Field Shield for Electromagnetic Fields and Vehicle Having an Integrated Magnetic Field Shield

• US 20140346815A1
• Filed: 12/05/2012
• Published: 11/27/2014
• Est. Priority Date: 12/21/2011
• Status: Abandoned Application

• Current Assignee: ThyssenKrupp Electrical Steel GmbH (Thyssenkrupp AG), Thyssenkrupp Steel Europe AG (Thyssenkrupp AG)
• Original Assignee: ThyssenKrupp Electrical Steel GmbH (Thyssenkrupp AG), Thyssenkrupp Steel Europe AG (Thyssenkrupp AG)
• Inventors: Keutz, Andreas, Dorner, Dorothee, Patberg, Lothar, Jansen, Andreas, Herget, Florian, Breidenbach, Andreas
• Application Number:
  US14/365,888
• Publication Number:
  US 20140346815A1
• Time in Patent Office: Days
• US Class Current: 296/193.07
• CPC Class Codes: B32B 15/04 comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 15/18 comprising iron or steel B32B15/011, B32B15/012 and B32B15/013 take precedence
• CPC Class Codes: B32B 2250/03 3 layers
• CPC Class Codes: B32B 2250/40 Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
• CPC Class Codes: B32B 2307/212 Electromagnetic interference shielding
• CPC Class Codes: B32B 2307/54 Yield strength; Tensile strength
• CPC Class Codes: B32B 2307/714 Inert, i.e. inert to chemical degradation, corrosion
• CPC Class Codes: B32B 2307/718 Weight, e.g. weight per square meter
• CPC Class Codes: B32B 2307/734 Dimensional stability
• CPC Class Codes: B32B 2605/00 Vehicles
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B62D 25/20 Floors or bottom sub-units sub-frames for mounting engine or suspensions B62D21/11; drip trays F16N31/006
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/361 made of combinations of electrically conductive material and ferromagnetic material
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H05K 9/0075 : Magnetic shielding materials
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y10T 428/31678 : Of metal

Abstract

The invention relates to a magnetic field shield for electromagnetic fields, preferably in the frequency range of 50 Hz to 200 kHz, essentially comprising a composite sheet formed from at least three layers arranged one above the other, wherein at least one of the layers is made of electrical steel sheet or electrical steel strip. In order to provide at low cost such a magnetic field shield that has low weight and good shielding effect, it is proposed that at least one of the layers is made of sheet steel and at least one of the layers is made of plastic and/or elastomer, wherein the at least one layer made of plastic and/or elastomer integrally bonds together the at least one layer made of electrical steel sheet/electrical steel strip and the at least one layer made of sheet steel.

Claims

1. A magnetic field shield for electromagnetic fields comprising:

a composite sheet (1) formed from at least three layers (1.1, 1.2, 1.3;

1.1, 1.21, 1.22, 1.31, 1.32) arranged one above the other, wherein at least one of the layers is made of electrical steel sheet or electrical steel strip, wherein at least one of the layers is made of sheet steel and at least one of the layers is made of plastic, elastomer, or a combination of plastic and elastomer wherein the at least one layer made of plastic, elastomer, or a combination of plastic and elastomer integrally bonds together the at least one layer made of electrical steel sheet or electrical steel strip and the at least one layer made of sheet steel.

2. The magnetic field shield according to claim 1, wherein the composite sheet is implemented as a bodywork part or chassis part of a vehicle.

3. The magnetic field shield according to claim 1, wherein the bodywork part defines a floor panel of an electrically driven motor vehicle equipped with a rechargeable battery.

4. The magnetic field shield according to claim 3, wherein the floor panel has a trough-shaped or tunnel-shaped structure in which is arranged a coil for inductive charging of the battery.

5. The magnetic field shield according to claim 4, further comprising a guard formed from flaps, a collar or bellows is fitted to the floor panel, which guard encloses the coil and is provided with a drive so that it can be moved from a retracted or raised position into an extended or lowered position and vice versa.

6. The magnetic field shield according to claim 4, wherein a drive is fitted to the floor panel, which drive can be used to move the coil from a raised position into a lowered position and vice versa.

7. The magnetic field shield according to claim 2, wherein the bodywork part is embodied as a longitudinal or transverse member.

8. The magnetic field shield according to claim 2, wherein the bodywork part defines a wall and/or a floor of a housing for accommodating a rechargeable battery.

9. The magnetic field shield according to claim 1, wherein the electrical steel sheet faces an electromagnetic radiation source.

10. The magnetic field shield according to claim 1, wherein the electrical steel sheet is arranged as a core layer between two layers made of sheet steel, wherein the electrical steel sheet is integrally bonded on both sides to the layers made of sheet steel by layers made of plastic, elastomer, or a combination of plastic and elastomer.

11. The magnetic field shield according to claim 1, wherein the sheet-steel sheet is made of stainless steel.

12. The magnetic field shield according to claim 1, wherein the sheet-steel sheet is made of austenitic steel or a higher-strength steel having a tensile strength of at least 350 MPa.

13. The magnetic field shield according to claim 1, wherein the composite sheet as a bodywork part or chassis part has a three-dimensional structure produced by forming.

14. The magnetic field shield according to claim 1, wherein the composite sheet as a bodywork part or chassis part has a trough-shaped or tunnel-shaped structure.

15. The magnetic field shield according to claim 1, wherein an anti-corrosion layer is provided on at least one side of the composite sheet.

16. A vehicle, in particular electrically driven motor vehicle, having an integrated magnetic field shield according to claim 1.

17. The magnetic shield according to claim 1, wherein the electromagnetic field is within a frequency range of 50 Hz to 200 kHz.