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. 07, 2011
Filed:
Aug. 17, 2010
Osamu Suzuki, Kasumigaura, JP;
Sunao Funakoshi, Kasumigaura, JP;
Keisuke Horiuchi, Hitachinaka, JP;
Atsuo Nishihara, Kashiwa, JP;
Yosuke Yasuda, Hitachinaka, JP;
Osamu Suzuki, Kasumigaura, JP;
Sunao Funakoshi, Kasumigaura, JP;
Keisuke Horiuchi, Hitachinaka, JP;
Atsuo Nishihara, Kashiwa, JP;
Yosuke Yasuda, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An electric power converter for a vehicle, including a semiconductor element from which a motor drive current is output, a drive circuit that drives the semiconductor element, a control circuit that controls the drive circuit, a capacitor that smooths a DC current to be input to the semiconductor element, a container housing the semiconductor element, the drive circuit, the control circuit and the capacitor, a refrigerant retained in a state of vapor-liquid two-phase equilibrium within the container, and a heat exchanger unit that condenses the refrigerant in a vapor phase to be a liquid phase and exchanges heat with outside, wherein the semiconductor element, the drive circuit, the control circuit and the capacitor are disposed in a positional arrangement that will leave the semiconductor element, the drive circuit, the control circuit and the capacitor immersed in the refrigerant as the electric power converter is installed in the vehicle, and the heat exchanger unit is disposed at a side of a wall of the container forming a vapor-phase space.