Integrated traction inverter module and bi-directional DC/DC converter

• US 6,496,393 B1
• Filed: 11/28/2001
• Issued: 12/17/2002
• Est. Priority Date: 11/28/2001
• Status: Expired due to Fees

• Current Assignee: Siemens VDO Automotive Corporation (Siemens AG)
• Original Assignee: Ballard Power Systems Corporation (Superior Plus Corporation)
• Inventors: Patwardhan, Ajay V
• Primary Examiner(s): Vu, Bao Q.
• Application Number:
  US09/683,172
• Time in Patent Office: 384 Days
• Field of Search: 363/132, 363/70, 363/137, 363/133, 363/134, 363/136
• US Class Current: 363/70
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections

Abstract

Integrated power systems and methods for use in an electric vehicle having a fuel cell and an electric motor, the integrated power systems and methods including a common casting, a traction inverter module operable for converting DC current generated by the fuel cell into AC current capable of powering the electric motor, and a DC/DC converter operable for stepping-down the voltage of the fuel cell. The traction inverter module and the DC/DC converter are disposed within the common casting.

Claims

1. An integrated power system for use in an electric vehicle having a fuel cell and an electric motor, the integrated power system comprising:

a common casting;

a traction inverter module operable for converting DC current generated by the fuel cell into AC current capable of powering the electric motor, the traction inverter module disposed within the common casting; and

a DC/DC converter operable for stepping-down the voltage of the fuel cell, the DC/DC converter disposed within the common casting.

2. The integrated power system of claim 1, further comprising a common busbar operable for routing incoming power to both the traction inverter module and the DC/DC converter.

3. The integrated power system of claim 1, further comprising a common coldplate operable for cooling the components of both the traction inverter module and the DC/DC converter.

4. The integrated power system of claim 1, further comprising a plurality of common connectors operable for connecting both the traction inverter module and the DC/DC converter to other components of the electric vehicle.

5. An electric vehicle having a fuel cell and an electric motor, the electric vehicle comprising:

an integrated power system, comprising;

a common casting;

a traction inverter module operable for converting DC current generated by the fuel cell into AC current capable of powering the electric motor, the traction inverter module disposed within the common casting; and

a DC/DC converter operable for stepping-down the voltage of the fuel cell, the DC/DC converter disposed within the common casting.

6. The electric vehicle of claim 5, wherein the integrated power system further comprises a common busbar operable for routing incoming power to both the traction inverter module and the DC/DC converter.

7. The electric vehicle of claim 5, wherein the integrated power system further comprises a common coldplate operable for cooling the components of both the traction inverter module and the DC/DC converter.

8. The electric vehicle of claim 5, wherein the integrated power system further comprises a plurality of common connectors operable for connecting both the traction inverter module and the DC/DC converter to other components of the electric vehicle.

9. An integrated power method for use in an electric vehicle having a fuel cell and an electric motor, the integrated power method comprising:

providing a common casting;

providing a traction inverter module operable for converting DC current generated by the fuel cell into AC current capable of powering the electric motor;

providing a DC/DC converter operable for stepping-down the voltage of the fuel cell; and

disposing the traction inverter module and the DC/DC converter within the common casting.

10. The integrated power method of claim 9, further comprising providing a common busbar operable for routing incoming power to both the traction inverter module and the DC/DC converter.

11. The integrated power method of claim 9, further comprising providing a common coldplate operable for cooling the components of both the traction inverter module and the DC/DC converter.

12. The integrated power method of claim 9, further comprising providing a plurality of common connectors operable for connecting both the traction inverter module and the DC/DC converter to other components of the electric vehicle.