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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 9849793 B1

PDFFull Text
Date of Patent:
Dec. 26, 2017

Filed:

Oct. 01, 2014

Electrical storage system for vehicle

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventors:

Hiroki Tashiro, Aichi-ken, JP;

Hiromasa Tanaka, Okazaki, JP;

Yuji Nishi, Nagoya, JP;

Yukinari Tanabe, Nagoya, JP;

Hiroyuki Kaiya, Toyota, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Rami Khatib

Int. Cl.
CPC ...
B60L 11/18 (2006.01); B60L 3/00 (2006.01); B60L 1/00 (2006.01); B60L 7/14 (2006.01); B60L 7/18 (2006.01); H01M 10/44 (2006.01); H02J 7/00 (2006.01); H01M 10/48 (2006.01); H01M 16/00 (2006.01);
U.S. Cl.
CPC ...
B60L 11/1811 (2013.01); B60L 1/00 (2013.01); B60L 3/0046 (2013.01); B60L 7/14 (2013.01); B60L 7/18 (2013.01); B60L 11/1857 (2013.01); B60L 11/1859 (2013.01); B60L 11/1861 (2013.01); B60L 11/1862 (2013.01); B60L 11/1868 (2013.01); B60L 11/1872 (2013.01); H01M 10/44 (2013.01); H01M 10/48 (2013.01); H02J 7/0029 (2013.01); H02J 7/0075 (2013.01); H02J 7/0091 (2013.01); B60L 2210/10 (2013.01); B60L 2210/12 (2013.01); B60L 2210/14 (2013.01); B60L 2240/545 (2013.01); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01); H01M 10/486 (2013.01); H01M 16/00 (2013.01); H01M 2220/20 (2013.01); H02J 2007/004 (2013.01); H02J 2007/0037 (2013.01); H02J 2007/0039 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7044 (2013.01); Y02T 10/7066 (2013.01); Y02T 10/7225 (2013.01); Y02T 10/7233 (2013.01);
Abstract

An electrical storage system includes a main battery, an auxiliary battery, a bidirectional DC-DC converter and a controller. The bidirectional DC-DC converter is provided between the auxiliary battery and a power supply path from the main battery to a driving motor. The bidirectional DC-DC converter steps down an output voltage from the power supply path to the auxiliary battery, and steps up an output voltage from the auxiliary battery to the power supply path. The controller controls charging and discharging of the auxiliary battery. The controller, when an allowable output power of the main battery decreases and an electric power becomes insufficient for a required vehicle output, supplies an electric power to the power supply path by discharging the auxiliary battery by using the bidirectional DC-DC converter. The controller, when an allowable input power of the main battery decreases and a regenerated electric power generated by the driving motor is not entirely charged into the main battery, charges part of the regenerated electric power into the auxiliary battery by using the bidirectional DC-DC converter.

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