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:
Jul. 07, 2015
Filed:
Jul. 25, 2011
Atsuo Nishihara, Kashiwa, JP;
Kenichiro Nakajima, Hitachinaka, JP;
Keisuke Horiuchi, Hitachinaka, JP;
Atsuo Nishihara, Kashiwa, JP;
Kenichiro Nakajima, Hitachinaka, JP;
Keisuke Horiuchi, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A power conversion device includes: a cooling basein which a flow passagethrough which a cooling medium flows is formed and an opening portionwhich is communicated with the flow passageis formed; a power module; and a flow passage control portion. The power modulehas a bottomed cylindrical portionin which a power semiconductor element is housed and which is inserted into the flow passagethrough the opening portion, a flange portionwhich is formed on an opening of the cylindrical portionand is fixed to the cooling baseso as to close the opening portion, and a group of radiator finswhich are mounted on an outer peripheral surface of the cylindrical portionwith a gap of a predetermined distance formed between the flange portionand the group of radiator fins. The flow passage control portionis arranged in a gap formed between the flange portionand the group of radiator fins, and introduces the cooling medium into the group of radiator finswhile preventing the cooling medium from flowing into gaps