COOLER FOR POWER MODULE AND POWER MODULE

Title:

COOLER FOR POWER MODULE AND POWER MODULE

Document Type and Number:

WIPO Patent Application WO/2008/142892

Kind Code:

A1

Abstract:

A cooler (28) for a power module (10) is formed by combining aluminum members (42, 44, 46, 48, 50) and has inside a casing (40) with a water path for cooling water. The construction enables the cooler (28) to be produced at a low material cost. Further, because the aluminum members can be easily processed, the cooling water path can be formed in a complex shape with depressions and protrusions having excellent heat radiation properties, and as a result, the cooling water path having high heat radiation properties can be constructed inside the casing (40). Also, the rigidity of a top plate (42) of a relatively small thickness is intentionally set low, with the rigidity required for the casing (40) sufficiently satisfied by a bottom plate (44) of relatively large thickness. Thus, the construction allows the top plate (42) to actively deform to release stress occurring in a joint face between the cooler (28) and an insulation base plate (18).

Inventors:

BABA YOUICHIRO (JP)
NAKAMURA HIDEO (JP)

Application Number:

PCT/JP2008/053711

Publication Date:

November 27, 2008

Filing Date:

February 25, 2008

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
BABA YOUICHIRO (JP)
NAKAMURA HIDEO (JP)

International Classes:

H01L23/473

Foreign References:

JP2003086744A	2003-03-20
JP2001148451A	2001-05-29
JP2006294971A	2006-10-26
JP2006032617A	2006-02-02
JP2002078356A	2002-03-15
JP2001077260A	2001-03-23

Other References: