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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 10723227 B1

PDFFull Text
Date of Patent:
Jul. 28, 2020

Filed:

Aug. 10, 2016

Brake system and method for four-wheel drive electric vehicle and electric vehicle

Applicant:

Byd Company Limited, Shenzhen, Guangdong, CN;

Inventors:

Yubo Lian, Shenzhen, CN;

Heping Ling, Shenzhen, CN;

Fanliang Meng, Shenzhen, CN;

Yanfei Xiong, Shenzhen, CN;

Weiqiang Chen, Shenzhen, CN;

Assignee:

BYD COMPANY LIMITED, Shenzhen, Guangdong, CN;

Attorney:

Calfee Halter & Griswold LLP

Primary Examiner:

Christian Chace

Assistant Examiner:

Michael F Whalen

Int. Cl.
CPC ...
B60L 3/00 (2019.01); B60L 7/18 (2006.01); B60L 7/26 (2006.01); B60L 15/20 (2006.01); B60L 58/13 (2019.01); B60T 7/04 (2006.01); B60T 8/171 (2006.01); B60T 8/172 (2006.01); B60T 8/72 (2006.01); B60T 13/74 (2006.01);
U.S. Cl.
CPC ...
B60L 3/0076 (2013.01); B60L 7/18 (2013.01); B60L 7/26 (2013.01); B60L 15/2009 (2013.01); B60L 58/13 (2019.02); B60T 7/042 (2013.01); B60T 8/171 (2013.01); B60T 8/172 (2013.01); B60T 8/72 (2013.01); B60T 13/741 (2013.01); B60L 2220/46 (2013.01); B60L 2240/12 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2250/26 (2013.01); B60L 2260/28 (2013.01); B60T 2270/402 (2013.01); B60T 2270/604 (2013.01); Y02T 10/645 (2013.01); Y02T 10/646 (2013.01); Y02T 10/705 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7044 (2013.01); Y02T 10/72 (2013.01); Y02T 10/7275 (2013.01);
Abstract

A brake system () and a brake method for a four-wheel drive electric vehicle and a four-wheel drive electric vehicle, in the system, according to a brake mode of the electric vehicle, a state of charge of a battery pack () and a vehicle speed, a first brake control unit controls a motor () to brake a wheel () through a motor controller () and a second brake control unit controls a brake actuator () to brake the wheels (). The first brake control unit further determines whether a brake torque of the brake actuator () on the wheels () fails. If yes, the first brake control unit controls the motor () to brake the corresponding wheel () through the motor controller ().

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