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:
Dec. 26, 2000
Filed:
May. 21, 1999
Applicant:
Inventors:
Hirohisa Yamamura, Hitachioota, JP;
Osamu Suzuki, Chiyoda-machi, JP;
Akio Yasukawa, Kashiwa, JP;
Nobunori Matsudaira, Hitachi, JP;
Assignee:
Hitachi Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ; H05K / ;
U.S. Cl.
CPC ...
363141 ; 363146 ; 361709 ;
Abstract
IGBT modules, bus bars and capacitors in an inverter main circuit are secured on the front face of a heat sink and at the back side of the heat sink a water cooling channel is formed to cool the IGBT modules. The bus bars and the capacitor, thereby the size of an inverter device used in an electric car is reduced and the duration thereof is prolonged.