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:
Apr. 11, 2006
Filed:
May. 26, 2005
Junya Yano, Kasai, JP;
Takeshi Osawa, Takasago, JP;
Junya Yano, Kasai, JP;
Takeshi Osawa, Takasago, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The present provides a leakage detection circuit for an electric vehicle, and so on, capable of calculating a leakage resistance. The leakage detection circuit for an electric vehicle detects a current I(t) that flows in leakage resistances Rand Rwhen one leakage detection switch SWis closed at tand the other leakage detection switch SWis opened, and detects a current I(t) when the switch SWis opened at tand the switch SWis closed. In addition, the circuit detects voltages V(t, t) and V(t, t) of portions where these leakage detection resistances Rare connected. A combined value Rof the leakage resistances is calculated by a leakage calculator based on the following equation 34