Electronic module with power components

• US 5,808,868 A
• Filed: 09/06/1996
• Issued: 09/15/1998
• Est. Priority Date: 09/08/1995
• Status: Expired due to Term

• Current Assignee: EM Holdings (Luxembourg) S.a.r.l.
• Original Assignee: Siemens AG
• Inventors: Drekmeier, Karl-Gerd
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): CHERVINSKY, BORIS LEO
• Application Number:
  US08/708,976
• Time in Patent Office: 739 Days
• Field of Search: 361/704, 361/707, 361/709, 361/710, 361/711, 361/715, 361/716, 361/717, 361/736, 361/752, 165/80.3, 165/185, 257/687, 257/706, 257/718, 257/719
• US Class Current: 361/704
• CPC Class Codes: H01L 23/16 Fillings or auxiliary members in containers or encapsulations, e.g. centering rings H01L23/42, H01L23/552 take precedence
• CPC Class Codes: H01L 25/072 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H05K 7/20472 Sheet interfaces
• CPC Class Codes: H05K 7/20854 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20863 takes precedence

Abstract

The protective housing (11) of the module IS placed in the manner of a cap on the outer edge (3) of a cooling body (1), on whose heat contact surface (5) facing the protective housing (11) lie the power components (9) or the circuit bearer (6) of a hybrid circuit (8). The protective housing (11) is made of plastic and has integrated clamp and lock areas (12, 13). The outer edge (3) of the cooling body (1) is fashioned so that by placing on of the protective housing (11) an annular positive and frictional connection can be produced between the protective housing (11) and the cooling body (1). The placing on simultaneously effects the surface pressure between the power components (9) and a heat contact surface (5) of the cooling body (1) by means of frictional connection elements (16, 17, 21) arranged between the power components (9) and the protective housing (11). Using this modular construction, the production of the thermal coupling to the cooling body (1), which would otherwise be additionally required, can be integrated into the cooling body/protective housing assembly procedure.

Claims

1. An electronic module having power components, a cooling body, a protective housing with outer terminals, and a surface pressure being effected between the power components and a heat contact surface of the cooling body, comprising:

the protective housing positioned like a cap on an outer edge of the cooling body, the cooling body having a heat contact surface which faces the protective housing and on which lie the power components;

the protective housing formed from a plastic material and having integrated clamp and lock areas;

the outer edge of the cooling body structured so that when the protective housing is placed on the outer edge of the cooling body, an annular positive and frictional connection is produced between the protective housing and the cooling body; and

the surface pressure being effected at the same time as the placing of the protective housing on the outer edge of the cooling body, by frictional connection elements arranged between the power components and the protective housing.

2. The electronic module according to claim 1, wherein the integrated frictional connection elements are made of elasticized plastic.

3. An electronic module having power components, comprising:

a cooling body having a heat contact surface on which are located the power components;

a protective housing in the form of a cap that is positioned on an outer edge of the cooling body and over the heat contact surface;

the protective housing being formed of a plastic material and having integrated clamp and lock areas;

the outer edge of the cooling body being structured so that when the protective housing is positioned on the outer edge, an annular positive and frictional connection is produced between the protective housing and the cooling body;

a surface pressure being effected that presses the power components against the heat control surface by elastic pressure element arranged between the power components and the protective housing.

4. The electronic module according to claim 3, which the integrated frictional connection elements are made of elasticized plastic.

5. The electronic module according to claim 3, wherein the protective housing has integrated plungers and wherein elastic pressure elements are arranged above the power components, the elastic pressure elements having such a high residual resetting force that, working together with plungers integrated into the protective housing, a surface pressure results with a heat transmission that cools the power components.