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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.:

US 9724998 B1

PDFFull Text
Date of Patent:
Aug. 08, 2017

Filed:

Jan. 13, 2014

Electric vehicle and insulation state determination method for electric vehicle

Applicants:

Tsubasa Migita, Toyota, JP;

Mitsuyori Matsumura, Seto, JP;

Inventors:

Tsubasa Migita, Toyota, JP;

Mitsuyori Matsumura, Seto, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;

Attorney:

Dinsmore & Shohl LLP

Primary Examiner:

Jared Fureman

Assistant Examiner:

Emmanuel R Dominique

Int. Cl.
CPC ...
G01R 31/12 (2006.01); B60R 16/02 (2006.01); B60L 11/14 (2006.01); B60L 3/00 (2006.01); B60L 3/04 (2006.01); B60L 11/00 (2006.01); B60L 11/12 (2006.01); B60L 15/00 (2006.01); B60L 15/20 (2006.01);
U.S. Cl.
CPC ...
B60L 11/14 (2013.01); B60L 3/0046 (2013.01); B60L 3/0069 (2013.01); B60L 3/04 (2013.01); B60L 11/005 (2013.01); B60L 11/123 (2013.01); B60L 15/007 (2013.01); B60L 15/20 (2013.01); B60L 2210/14 (2013.01); B60L 2210/40 (2013.01); B60L 2220/14 (2013.01); B60L 2240/12 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01); B60L 2260/26 (2013.01); B60L 2270/20 (2013.01); Y02T 10/6217 (2013.01); Y02T 10/645 (2013.01); Y02T 10/7022 (2013.01); Y02T 10/7077 (2013.01); Y02T 10/7225 (2013.01); Y02T 10/7241 (2013.01); Y02T 10/7275 (2013.01);
Abstract

Provided is an electric vehicle including an electric system that generates drive power, a detector, and a controller. The electric system includes a power storage device, a drive device that uses power of the power storage device to generate drive power, a first relay provided between the positive electrode of the power storage device and the drive device, and a second relay provided between the negative electrode of the power storage device and the drive device. The detector is electrically connected to the power storage device and detects an insulation abnormality in the electric system. The controller determines the insulation state of the electric system on the basis of a detection result of the detector obtained when the first relay and the second relay are open and a detection result of the detector obtained when either of the first relay and the second relay is thereafter closed.

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