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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 10183555 B1

PDFFull Text
Date of Patent:
Jan. 22, 2019

Filed:

Nov. 07, 2014

Onboard electric system

Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventors:

Koji Sakai, Kariya, JP;

Tomoyuki Sumi, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, Aichi-pref., JP;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Alfonso Perez Borroto

Assistant Examiner:

Esayas Yeshaw

Int. Cl.
CPC ...
B60L 1/00 (2006.01); H02G 3/00 (2006.01); B60H 1/32 (2006.01); B60L 3/00 (2006.01); B60L 3/04 (2006.01); B60L 11/18 (2006.01); B60L 15/00 (2006.01);
U.S. Cl.
CPC ...
B60H 1/3225 (2013.01); B60H 1/3222 (2013.01); B60L 1/003 (2013.01); B60L 3/0023 (2013.01); B60L 3/04 (2013.01); B60L 11/1803 (2013.01); B60L 11/1868 (2013.01); B60L 15/007 (2013.01); B60H 2001/3266 (2013.01); B60H 2001/3292 (2013.01); B60L 2210/12 (2013.01); B60L 2220/14 (2013.01); B60L 2220/16 (2013.01); B60L 2240/36 (2013.01); B60L 2240/525 (2013.01); B60L 2240/527 (2013.01); B60L 2240/529 (2013.01); B60L 2240/545 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01); B60L 2270/20 (2013.01); Y02T 10/644 (2013.01); Y02T 10/645 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7066 (2013.01); Y02T 10/7233 (2013.01);
Abstract

An onboard electric system includes a drive circuit that drives an electric motor based on an output voltage of a direct current power supply; a first smoothing capacitor; a drive signal generator; a first discharge resistor that is connected between a positive electrode and a negative electrode of the first smoothing capacitor; a first discharge switcher that is connected in series to the first discharge resistor between the positive electrode and the negative electrode, and releases or makes a connection between the positive electrode and the negative electrode; and an off-signal generator that outputs an off signal to the first discharge switcher. The first discharge switcher is provided by a switcher of a normally-ON type that makes the connection between the positive electrode and the negative electrode through the first discharge resistor in a period other than a period while the off-signal generator provides the off signal.

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