Snap in high power, high current connector with integrated EMI filtering

• US 7,525,825 B2
• Filed: 09/02/2005
• Issued: 04/28/2009
• Est. Priority Date: 09/02/2005
• Status: Expired due to Fees

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (General Motors Company)
• Inventors: Selogie, Mark L, Stancu, Constantin C., Korich, Mark D.
• Primary Examiner(s): Ullah; Akm E
• Assistant Examiner(s): DIAO, M BAYE
• Application Number:
  US11/218,367
• Publication Number:
  US 20070052500A1
• Time in Patent Office: 1,334 Days
• Field of Search: 363/34, 363/35, 363/39, 363/40, 363/55, 363/109, 307/2, 307/10.1, 307/91, 307/107, 307/108, 310/54, 310/68.R, 310/89, 310/154.14, 310/159, 361/328
• US Class Current: 363/39
• CPC Class Codes: H01R 13/719 specially adapted for high frequency, e.g. with filters
• CPC Class Codes: H01R 4/30 utilising a screw or nut clamping member H01R4/50 takes precedence; utilising a clamping member acted on by screw or nut H01R4/38; for coaxial cables H01R9/0521

Abstract

A filter assembly is provided which includes a Faraday cage interface. Electrical noise is filtered by the Faraday cage interface. The Faraday cage interface is configured to prevent passage of electromagnetic waves.

Claims

1. A low noise inverter system, comprising:

a battery;

a bus bar;

an inverter module directly coupled to the bus bar; and

a connector comprising;

a connector pin directly coupled to the bus bar and directly coupled to the battery, wherein the connector pin is configured to receive an input signal having a noise component from the battery and to provide a filtered input signal to the inverter module via the bus bar; and

a Faraday cage interface disposed at least partially around the connector pin to reduce electromagnetic interference caused by the noise component and to reduce electromagnetic interference radiating from the connector pin to the inverter module, wherein the Faraday cage interface comprises;

a chassis;

a spring clip which at least partially surrounds at least a portion of the connector pin and a filter card secured between the chassis and the bus bar.

2. The system of claim 1,

wherein the Faraday cage interface directly couples the bus bar to the chassis.

3. The system of claim 2, wherein the spring clip and the filter card are disposed between the bus bar and chassis, and wherein the bus bar is coupled to at least a portion of the chassis.

4. The system of claim 3, wherein the filter card comprises:

a circuit board having a plurality of capacitors mounted thereon, wherein the spring clip electrically couples the connector pin to the circuit board.

5. The system of claim 2, wherein the filter assembly, further comprises:

a bolt configured to couple the input to the connector pin and to secure the bus bar to at least a portion of the chassis.

6. The system of claim 5, wherein the spring clip and bolt secure the filter card to the chassis.

7. The system of claim 1, wherein the input signal is a DC input signal from a DC power source having an EMI noise component.

8. The system of claim 1, wherein the connector further comprises:

an inductive core coupled to the inverter module via bus bar, wherein the inductive core is disposed around at least a portion of the bus bar, and wherein the inductive core is coupled to the filter assembly via the bus bar.

9. A filter assembly for coupling a bus bar to at least a portion of a chassis, comprising:

a connector pin directly coupled to the bus bar and directly coupled to a battery, the connector pin configured to receive a DC input signal having a noise component from the battery, and to provide a filtered input signal to the bus bar; and

a Faraday cage interface disposed at least partially around the connector pin to reduce electromagnetic interference caused by the noise component and to reduce electromagnetic interference radiating from the connector pin, wherein the Faraday cage interface comprises;

the chassis a spring clip which at least partially surrounds at least a portion of the connector pin; and

a filter card secured between the chassis and the bus bar.

10. The filter assembly of claim 9, wherein the filter card comprises:

a circuit board having a plurality of capacitors mounted thereon, wherein the spring clip electrically couples the connector pin to the circuit board.

11. The filter assembly of claim 9, further comprising:

a bolt configured to couple the input to the connector pin.

12. The filter assembly of claim 9, wherein the DC input signal has an EMI noise component.

13. The filter assembly of claim 11, wherein the filter card is secured to the chassis by the spring clip and bolt.

14. The filter assembly of claim 13, wherein the bolt is configured to secure the bus bar to at least a portion of the chassis.