Charger assembly and electromagnetic interference shield assembly

1. 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;

wherein the electronic subassembly comprises a high voltage charger to convert alternating current to direct current to charge an automotive battery;

wherein the first housing and the second housing provide an electromagnetic interference (EMI) shield assembly;

wherein the first housing is formed of polyamide 66 with ten percent Carbon Nickel fiber to shield against high frequency EMI;

wherein the second housing is formed of polyamide 66 with thirty percent Stainless Steel fiber to shield against low frequency EMI; and

wherein the EMI shield assembly further comprises a metallic layer disposed between the first housing and the second housing.

2. The electronic assembly of claim 1 wherein the metallic layer is coated upon one of an exterior of the first housing and an interior of the second housing.

3. The electronic assembly of claim 1 wherein the metallic layer is coated upon an exterior of the first housing.

4. The electronic assembly of claim 1 wherein the metallic layer comprises aluminum foil.

5. The electronic assembly of claim 1 wherein the metallic layer comprises a steel housing.

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

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

8. The electronic assembly of claim 1 wherein the first housing has a wall thickness of approximately one millimeter.