IDiyas

For the Inventor, By the Inventor

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 11305653 B1

PDFFull Text
Date of Patent:
Apr. 19, 2022

Filed:

Sep. 15, 2017

Electric vehicle drive device

Applicant:

Nsk Ltd., Tokyo, JP;

Inventors:

Ryuho Morita, Kanagawa, JP;

Yasuyuki Matsuda, Kanagawa, JP;

Mitsuru Oike, Kanagawa, JP;

Daisuke Gunji, Kanagawa, JP;

Shin Yamamoto, Kanagawa, JP;

Assignee:

NSK LTD., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Hunter B Lonsberry

Assistant Examiner:

Elizabeth Yang

Int. Cl.
CPC ...
B60L 15/20 (2006.01); B60K 1/02 (2006.01); B60K 7/00 (2006.01); B60K 17/02 (2006.01); B60K 17/04 (2006.01); B60K 17/08 (2006.01); F16H 3/72 (2006.01); F16H 3/66 (2006.01); B60L 9/18 (2006.01);
U.S. Cl.
CPC ...
B60L 15/20 (2013.01); B60K 1/02 (2013.01); B60K 7/00 (2013.01); B60K 7/0007 (2013.01); B60K 17/02 (2013.01); B60K 17/046 (2013.01); B60K 17/08 (2013.01); B60L 9/18 (2013.01); F16H 3/66 (2013.01); F16H 3/72 (2013.01); F16H 3/728 (2013.01); B60K 2007/003 (2013.01); B60K 2007/0092 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2240/461 (2013.01); B60Y 2400/73 (2013.01); F16H 2200/0021 (2013.01); F16H 2200/201 (2013.01); Y02T 10/72 (2013.01);
Abstract

An electric vehicle drive device includes: a first motor; a second motor; a transmission mechanism coupled to the first motor and the second motor; and a control unit configured to control operation of the first motor and the second motor based on a drive signal. The transmission mechanism includes: a sun gear shaft coupled to the first motor; a first planetary gear mechanism; a second planetary gear mechanism; and a one-way clutch configured to restrict a rotation direction of a first carrier to a predetermined positive rotation direction. The drive signal includes gear change information indicating a first state in which the second motor is controlled based on torque or a second state in which the second motor is controlled based on rotation speed, and throttle information indicating an acceleration of rotation speed of a wheel.

Find Patent Forward Citations

Loading…