CHARGER ASSEMBLY AND ELECTROMAGNETIC INTERFERENCE SHIELD ASSEMBLY

• US 20130135841A1
• Filed: 11/30/2011
• Published: 05/30/2013
• Est. Priority Date: 11/30/2011
• Status: Active Grant

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Pavlovic, Slobodan, Sharaf, Nadir, Daftuar, Dilip
• Granted Patent: US 8,885,360 B2
• Time in Patent Office: Days
• US Class Current: 361/818
• CPC Class Codes: H05K 9/0047 being rigid plastic containers having conductive particles, fibres or mesh embedded therein

Abstract

An electromagnetic interference shield assembly is provided with a first housing formed of a first conductive polymer. The first housing has a cavity sized to receive an electronic sub-assembly therein. A second housing is formed of a second conductive polymer. The second housing has a cavity sized to receive the first housing therein.

Claims

1. An electromagnetic interference (EMI) shield assembly comprising:

a first housing formed of a first conductive polymer, the first housing having a cavity sized to receive an electronic sub-assembly therein; and

a second housing formed of a second conductive polymer, the second housing having a cavity sized to receive the first housing therein.

2. The EMI shield assembly of claim 1 further comprising a metallic layer oriented between the first housing and the second housing.

3. The EMI shield assembly of claim 2 wherein the metallic layer is coated upon one of an exterior of the first housing and an interior of the second housing.

4. The EMI shield assembly of claim 2 wherein the metallic layer is coated upon an exterior of the first housing.

5. The EMI shield assembly of claim 2 wherein the metallic layer comprises aluminum foil.

6. The EMI shield assembly of claim 2 wherein the metallic layer comprises a steel housing.

7. The EMI shield assembly of claim 1 wherein the first housing shields against high frequency EMI.

8. The EMI shield assembly of claim 1 wherein the first housing shields against EMI within a range of 20 Hertz to 1.73 MHertz.

9. The EMI shield assembly of claim 1 wherein the second housing shields against low frequency EMI.

10. The EMI shield assembly of claim 1 wherein the second housing shields against EMI within a range of twenty- to one hundred Hertz.

11. The EMI shield assembly of claim 1 wherein the first conductive polymer comprises a Nickel Coated Carbon fiber.

12. The EMI shield assembly of claim 1 wherein the first conductive polymer comprises a polyamide and a Nickel Coated Carbon fiber.

13. The EMI shield assembly of claim 1 wherein the first conductive polymer comprises polyamide 66 with ten percent Nickel Coated Carbon fiber.

14. The EMI shield assembly of claim 13 wherein the first housing has a wall thickness of approximately one millimeter.

15. The EMI shield assembly of claim 1 wherein the second conductive polymer comprises a Stainless Steel fiber.

16. The EMI shield assembly of claim 1 wherein the second conductive polymer comprises a polyamide and a Stainless Steel fiber.

17. The EMI shield assembly of claim 1 wherein the second conductive polymer comprises polyamide 66 with thirty percent Stainless Steel fiber.

18. An electronic assembly comprising:

a first housing formed of a first conductive polymer, the first housing having a cavity;

a second housing formed of a second conductive polymer, the second housing having a cavity sized to receive the first housing therein; and

an electronic subassembly disposed within the cavity of the first housing.

19. The electronic assembly of claim 18 wherein the electronic subassembly comprises a high voltage charger to convert alternating current to direct current to charge an automotive battery.

20. An electromagnetic interference (EMI) shield assembly comprising:

a first housing formed of polyamide 66 with ten percent Carbon Nickel fiber to shield against high frequency EMI, the first housing having a cavity sized to receive an electronic assembly therein;

a second housing formed of polyamide 66 with thirty percent Stainless Steel fiber to shield against low frequency EMI, the second housing having a cavity sized to receive the first housing therein; and

a metallic layer oriented between the first housing and the second housing.