# US 2021/0243924 A1 · Method for Shielding Components

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- Number: US 2021/0243924 A1
- Document ID: US20210243924A1
- Status: Published application
- Kind: A1
- Application number: 17/049,868
- Filed: 2019-05-08
- Published: 2021-08-05
- Earliest claimed: 2018-06-06
- Assignees: Bayerische Motoren Werke Aktiengesellschaft
- Applicants: Bayerische Motoren Werke Aktiengesellschaft
- Inventors: Wolfram WAGENER
- Web page: https://patentgrep.com/patent/US20210243924A1

## CPC

- H05K 9/0049: {being metallic containers}
- H05K 9/0092: {comprising electro-conductive pigments, e.g. paint, ink, tampon printing}
- B05D 1/02: performed by spraying
- C23C 4/131: Wire arc spraying
- H05K 9/0081: {Electromagnetic shielding materials, e.g. EMI, RFI shielding (H05K9/0003 takes precedence)}
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)

## Abstract

A method for shielding components includes the steps of providing a component and applying at least one coating region, designed to shield from a magnetic and/or an electrical field, to the component by a thermal and/or kinetic spraying method such that a first arrangement space is shielded from a second arrangement space.

## Claims

### Claim at position 1

-12. (canceled)

### Claim 13

A method for shielding components, comprising the steps of:
providing a component; and
applying to the component a coating region by a thermal and/or a kinetic spraying method, wherein the coating region is a magnetic field shield and/or an electrical field shield.

### Claim 14 (depends on 13)

The method according to claim 13, wherein the spraying method is arc wire spraying or cold gas spraying.

### Claim 15 (depends on 13)

The method according to claim 13, wherein the coating region has a thickness in a range from 50 to 800 μm.

### Claim 16 (depends on 13)

The method according to claim 13 further comprising the step of accelerating a coating material that forms the coating region to a speed greater than 100 m/s.

### Claim 17 (depends on 13)

The method according to claim 13 further comprising the steps of:
simulating or calculating a magnetic field and/or an electrical field; and
positionally accurately applying the coating region based on the simulating or calculating.

### Claim 18

A housing, comprising:
a housing wall which defines a first arrangement space and a second arrangement space; and
a coating region disposed on the housing wall, wherein the coating region is a magnetic field shield and/or an electrical field shield, wherein the coating region is positionally accurately arranged and dimensioned such that the second arrangement space is shielded with respect the first arrangement space, and wherein the coating region is a thermal sprayed and/or a kinetic sprayed coating.

### Claim 19 (depends on 18)

The housing according to claim 18, wherein the coating region is disposed on an inside of the housing wall.

### Claim 20 (depends on 18)

The housing according to claim 18, wherein the coating region is disposed on an outside of the housing wall.

### Claim 21 (depends on 18)

The housing according to claim 18 in combination with a power electronics system disposed in the second arrangement space.

### Claim 22 (depends on 18)

The housing according to claim 18 wherein the housing is a metal casted component.

### Claim 23 (depends on 22)

The housing according to claim 22, d herein the housing is formed as one part.

### Claim 24 (depends on 13)

A vehicle component produced by the method according to claim 13.

### Claim 25 (depends on 24)

The vehicle component according to claim 24, wherein the vehicle component is a chassis component.