The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2014
Filed:
Apr. 09, 2012
Haruaki Motoda, Isesaki, JP;
Haruaki Motoda, Isesaki, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A motor drive apparatus includes a motor; and an ECU. The ECU includes an ECU housing. The ECU housing includes a heat sink having a module receiving portion. The module receiving portion includes a heat-receiving surface and an opening portion open to one-end side of the ECU housing. The ECU further includes a control substrate received by the ECU housing to be perpendicular to the heat-receiving surface and to face the motor; a plurality of semiconductor modules each received in the module receiving portion and connected electrically with the control substrate to control a power supply of the motor. Each of the plurality of semiconductor modules includes a heat-radiating surface at an outer portion thereof. The ECU further includes a module retaining section pressing the heat-radiating surface to the heat-receiving surface to retain each of the plurality of semiconductor modules in the module receiving portion.