Power unit device and power converter device

• US 20060250765A1
• Filed: 02/03/2006
• Published: 11/09/2006
• Est. Priority Date: 04/22/2005
• Status: Active Grant

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Kimura, Toru, Kuramoto, Yuji, Yamabuchi, Hiroshi
• Granted Patent: US 7,333,331 B2
• Time in Patent Office: Days
• US Class Current: 361/679.10
• CPC Class Codes: B60K 2001/003 with means for cooling the electrical propulsion units
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change

Abstract

A power unit device which can be made small, with which special measures of plant and labor at the time of assembly are unnecessary, and of which assembly is easy and universality in its manufacturing aspect is excellent. The power unit device has a heat sink having a first heat-receiving part and formed on the opposite side from this a second heat-receiving part; a power module, in firm contact with the first heat-receiving part, containing a power semiconductor element for performing DC-AC conversion and/or AC-DC conversion for one phase; a smoothing condenser, in firm contact with the second heat-receiving part, for suppressing ripple current of the power semiconductor element; and fixing means passing through the power module, the heat sink and the smoothing condenser.

Claims

1. A power unit device, comprising:

a heat sink having a first heat-receiving part and formed on the opposite side from this a second heat-receiving part;

a power module, in firm contact with the first heat-receiving part, containing a power semiconductor element for performing DC-AC conversion and/or AC-DC conversion for one phase;

a smoothing condenser, in firm contact with the second heat-receiving part, for suppressing ripple current of the power semiconductor element; and

fixing means for integrating the power module, the heat sink and the smoothing condenser together.

2. A power unit device according to claim 1, wherein the fixing means consists of one through bolt passing through the approximate centers of the power module, the heat sink and the smoothing condenser.

3. A power unit device according to claim 1, further comprising a gate control circuit board for controlling the power semiconductor element and a holder for holding this gate control circuit board, wherein the holder is integrated by the fixing means with a face of the heat sink on the opposite side thereof from the power module.

4. A power unit device according to claim 2, further comprising a gate control circuit board for controlling the power semiconductor element and a holder for holding this gate control circuit board, wherein the holder is integrated by the fixing means with a face of the heat sink on the opposite side thereof from the power module.

5. A power unit device according to claim 1, wherein the heat sink consists of a box-shaped vessel formed so that a working fluid can pass through its interior.

6. A power unit device according to claim 2, wherein the heat sink consists of a box-shaped vessel formed so that a working fluid can pass through its interior.

7. A power unit device according to claim 3, wherein the heat sink consists of a box-shaped vessel formed so that a working fluid can pass through its interior.

8. A power unit device according to claim 4, wherein the heat sink consists of a box-shaped vessel formed so that a working fluid can pass through its interior.

9. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 1 are used and disposed in a circle with approximately uniform angular spacing.

10. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 2 are used and disposed in a circle with approximately uniform angular spacing.

11. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 3 are used and disposed in a circle with approximately uniform angular spacing.

12. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 5 are used and disposed in a circle with approximately uniform angular spacing.

13. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 7 are used and disposed in a circle with approximately uniform angular spacing.

14. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 1 are used and disposed in a straight line with an approximately uniform spacing.

15. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 2 are used and disposed in a straight line with an approximately uniform spacing.

16. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 3 are used and disposed in a straight line with an approximately uniform spacing.

17. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 5 are used and disposed in a straight line with an approximately uniform spacing.

18. A power converter device wherein a number corresponding to a control object of power unit devices according to claim 7 are used and disposed in a straight line with an approximately uniform spacing.