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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 11945302 B1

PDFFull Text
Date of Patent:
Apr. 02, 2024

Filed:

Nov. 13, 2020

Low-floor electric axle assembly

Applicant:

Tsinghua University, Beijing, CN;

Inventors:

Jian-Qiu Li, Beijing, CN;

Jia-Yi Hu, Beijing, CN;

Liang-Fei Xu, Beijing, CN;

Bing-Kun Cai, Beijing, CN;

Hang Li, Beijing, CN;

Assignee:

TSINGHUA UNIVERSITY, Beijing, CN;

Attorney:
Primary Examiner:

Katy M Ebner

Int. Cl.
CPC ...
B60K 17/14 (2006.01); B60B 35/00 (2006.01); B60G 9/00 (2006.01); B60G 17/08 (2006.01); B60K 7/00 (2006.01); B60T 1/06 (2006.01); F16H 1/28 (2006.01); F16H 57/04 (2010.01); H02K 7/00 (2006.01); H02K 7/08 (2006.01); H02K 7/102 (2006.01); H02K 7/116 (2006.01); H02K 9/19 (2006.01);
U.S. Cl.
CPC ...
B60K 17/14 (2013.01); B60B 35/002 (2013.01); B60G 9/00 (2013.01); B60G 17/08 (2013.01); B60K 7/0007 (2013.01); B60T 1/065 (2013.01); F16H 1/28 (2013.01); F16H 57/0476 (2013.01); F16H 57/0486 (2013.01); H02K 7/006 (2013.01); H02K 7/083 (2013.01); H02K 7/102 (2013.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01); B60G 2202/242 (2013.01); B60K 2007/0092 (2013.01); F16H 2001/2881 (2013.01);
Abstract

A low-floor electric axle assembly including: an axle housing, two hub motors, two planetary gear reducers, two hubs, a brake system, two C-shaped beams, and a suspension system. Mechanical mounting of the suspension system is compatible with a conventional axle. The axle housing has a left and right symmetrical dumbbell-shaped structure configured to bear a weight of a vehicle. The hub motors are inner rotor type motors and are separately arranged at two ends of the axle housing left and right symmetrically. The hub motors are arranged coaxially with two wheels respectively. Two hub motor rotors are connected to the planetary gear reducers respectively. Each of the planetary gear reducers is a single-stage planetary gear reducer. A sun gear of each of the planetary gear reducers receives power outputted by each of the hub motor. Two planetary gear reducer housings are power output ends connected to two rims respectively.

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