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:
Jun. 16, 2009
Filed:
Jun. 22, 2006
Makato Torigoe, West Bloomfield, MI (US);
Liang Shao, Ann Arbor, MI (US);
George Saikalis, West Bloomfield, MI (US);
Hiroki Funato, Yokohama, JP;
Takayoshi Nakamura, Ibaraki, JP;
Makato Torigoe, West Bloomfield, MI (US);
Liang Shao, Ann Arbor, MI (US);
George Saikalis, West Bloomfield, MI (US);
Hiroki Funato, Yokohama, JP;
Takayoshi Nakamura, Ibaraki, JP;
Hitachi, Ltd, Tokyo, JP;
Abstract
A power inverter of the type used with hybrid electric vehicles having a circuit board with a power layer having a first and second section which are electrically separated using slits from each other on the power layer. A control circuit is connected to and powered by the first section of the power layer while a switching power supply is connected to and powered by the second section of the power layer. An electromagnetic filter is electrically connected between the sections of the power layer. This electromagnetic filter blocks high frequency noises of the type generated by the switching power supply while enabling the sections to be maintained at the same DC voltage level. Optionally, a ferrite covering is provided around a current bus bar of the power inverter to contain magnetic fields generated by current flow through the bus bar.