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Control device for an electric machine

A controller and circuit board technology, applied in the manufacture of printed circuits, assembling printed circuits with electrical components, printed circuits, etc., can solve the problem that thermal paste should not be left when the thermal paste enters, and achieves low manufacturing cost and simplicity. cost, cost-effectiveness

Active Publication Date: 2020-07-28
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A common problem with such controllers is that when the circuit board is spliced ​​together with the heat sink, the lateral spreading of the thermal paste is only very limitedly controllable and the thermal paste can thus also enter into areas where thermal paste should not remain

Method used

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  • Control device for an electric machine
  • Control device for an electric machine
  • Control device for an electric machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 A perspective view of a first exemplary embodiment of the controller according to the invention is shown.

[0035] A controller 10 for a motor not shown in the figure is shown. The controller 10 has a flat printed circuit board 20 and a likewise flat heat sink 30 . The circuit board 20 and the heat sink 30 are spliced ​​together, wherein a thermally conductive paste 40 is introduced between the circuit board 20 and the heat sink 30 . The splicing can be done, for example, by designing the thermally conductive paste 40 as a thermally conductive glue.

[0036] In addition, the circuit board 20 has features for figure 1 The two notches of the electrical contacts of the member 22 that cannot be seen in the figure. The electrical contacts of the component 22 are therefore designed here as push-in contacts 23 . Furthermore, the printed circuit board 20 has space for at least some of the structural elements required to drive the electric motor, wherein these stru...

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PUM

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Abstract

The invention relates to a control device (10) for an electric machine, wherein the control device (10) comprises a circuit board (20) and a cooling body (30), which are joined together, wherein a heat-conducting paste (40) is introduced between the circuit board (20) and the cooling body (30) at least for thermally connecting the circuit board (20) to the cooling body (30). One aspect of the invention is that the circuit board (20) and / or the cooling body (30) has at least one recess (32), wherein the recess (32) is formed in the lateral direction between a region (50) to be protected and theintroduced heat-conducting paste (40) in such a way that, when the circuit board (20) and the cooling body (30) are joined, an excess portion of the laterally spreading heat-conducting paste (40) canbe received by the recess (32).

Description

technical field [0001] The invention relates to a controller for an electric motor, wherein the controller comprises a circuit board and a cooling body which are spliced ​​together, wherein a device for thermally connecting the circuit board and the cooling body is introduced between the circuit board and the cooling body of thermal paste. Background technique [0002] Such a controller is disclosed, for example, in publication WO 1997027728 A2. [0003] A common problem with such controllers is that when the circuit board is spliced ​​with the cooling body, the lateral spreading of the thermal paste is only very limitedly controllable and the thermal paste can thus also enter into areas where thermal paste should not remain . Contents of the invention [0004] The invention relates to a controller for a motor, wherein the controller includes a circuit board and a cooling body spliced ​​together, wherein a thermal paste is introduced between the circuit board and the coo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02H05K7/20H05K3/00H05K3/34
CPCH05K1/0203H05K1/021H05K3/0061H05K3/3447H05K2201/09036H05K2201/09745H05K2201/10553H05K7/20454
Inventor H.洪特S.卡尔蒂凯延L.M.加内桑P.伦纳
Owner ROBERT BOSCH GMBH