Granted Patent B2

US 8,248,809 · App. 12/198,723 · Granted Aug 21, 2012

Abstract

Claims (32)

1. A power module for use in a vehicle, the power module comprising:

a power electronic substrate;

a first plastic frame adapted to house the power electronic substrate; and

a second plastic frame adapted to house the power electronic substrate, wherein:

the first plastic frame and the second plastic frame are bonded together about a perimeter of the power electronic substrate; and

the power electronic substrate is disposed between the first plastic frame and the second plastic frame such that a seal is formed between the first plastic frame and the power electronic substrate when the first plastic frame and the second plastic frame are bonded together.

2. The power module of claim 1 , further comprising a first sealing element interposed between the power electronic substrate and the first plastic frame, the first sealing element being configured to form the seal.

3. The power module of claim 2 , wherein the first sealing element is integral with the first plastic frame.

4. The power module of claim 1 , further comprising a cooling mechanism adjacent to the first plastic frame and configured to provide direct cooling to a surface of the power electronic substrate proximate the first plastic frame.

5. The power module of claim 1 , wherein the first plastic frame and the second plastic frame are adapted to be joined at an interior point within the power electronic substrate.

6. The power module of claim 1 , wherein the power electronic substrate is a direct bonded copper substrate.

7. The power module of claim 1 , wherein the first plastic frame and the second plastic frame are bonded together by laser welds.

8. A method for constructing an inverter power module, the method comprising:

aligning a power electronic substrate between a first plastic support frame and a second plastic support frame, the first plastic support frame and the second plastic support frame being adapted to house the power electronic substrate;

compressing the first plastic support frame and the second plastic support frame together to form a seal between the first plastic support frame and the power electronic substrate; and

joining the first plastic support frame and the second plastic support frame about a perimeter of the power electronic substrate.

9. The method of claim 8 , further comprising joining the first plastic support frame and the second plastic support frame at an interior point.

10. The method of claim 8 , further comprising joining a cooling mechanism to the first plastic support frame, the cooling mechanism being adapted to provide coolant to a surface of the power electronic substrate proximate the first plastic support frame.

11. The method of claim 8 , the first plastic support frame and the second plastic support frame being adapted for laser welding, wherein joining the first plastic support frame and the second plastic support frame comprises laser welding the first plastic support frame and the second plastic support frame together.

12. The method of claim 8 , further comprising aligning a sealing element interposed between the first plastic support frame and the power electronic substrate prior to the compressing step, wherein the sealing element forms the seal between the power electronic substrate and the first plastic support frame when the first plastic support frame and the second plastic support frame are compressed.

13. An inverter module comprising:

a power electronic substrate;

a first support frame adapted to house the power electronic substrate, the first support frame having a first region adapted to allow direct cooling of the power electronic substrate;

a gasket interposed between the power electronic substrate and the first support frame, the gasket being configured to provide a seal between the first region and the power electronic substrate; and

a second support frame adapted to house the power electronic substrate, wherein the first support frame and the second support frame are joined about a perimeter of the power electronic substrate to form the seal.

14. The inverter module of claim 13 , the power electronic substrate having a plurality of interior voids, wherein the first support frame and the second support frame are joined at locations aligned with the plurality of interior voids.

15. The inverter module of claim 14 , wherein the first support frame includes a plurality of pins configured to protrude through the plurality of interior voids.

16. The inverter module of claim 13 , further comprising a cooling mechanism adjacent to the first support frame, the cooling mechanism being configured to provide jet impingement cooling to a surface of the power electronic substrate aligned with the first region.

17. The inverter module of claim 13 , the second support frame having a second region adapted to allow direct cooling of the power electronic substrate, wherein the inverter module further comprises a second cooling mechanism adjacent to the second support frame, the second cooling mechanism being configured to provide direct cooling to a surface of the power electronic substrate aligned with the second region.

18. The inverter module of claim 17 , further comprising a second gasket interposed between the power electronic substrate and the second support frame, the second gasket being configured to provide a second seal between the second region and the power electronic substrate when the first support frame and the second support frame are joined.

19. The inverter module of claim 13 , wherein the power electronic substrate is a direct bonded copper substrate.

20. The inverter module of claim 13 , wherein the gasket is integral with the first support frame.

Assignments (13)