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.:
Date of Patent:
Jan. 01, 2013
Filed:
Apr. 18, 2008
Kai Liu, Shenzhen, CN;
Jian Gong, Shenzhen, CN;
Xuguang Zhou, Shenzhen, CN;
BO Zu, Shenzhen, CN;
Guangming Yang, Shenzhen, CN;
Axi Qi, Shenzhen, CN;
Xiaohua Tang, Shenzhen, CN;
BO Zhou, Shenzhen, CN;
Xunjin Xu, Shenzhen, CN;
Kai Liu, Shenzhen, CN;
Jian Gong, Shenzhen, CN;
Xuguang Zhou, Shenzhen, CN;
Bo Zu, Shenzhen, CN;
Guangming Yang, Shenzhen, CN;
Axi Qi, Shenzhen, CN;
Xiaohua Tang, Shenzhen, CN;
Bo Zhou, Shenzhen, CN;
Xunjin Xu, Shenzhen, CN;
BYD Co. Ltd., , CN;
Abstract
A clutchless transmission apparatus and control method thereof. The transmission apparatus comprises a motor () and a transmission (), said motor () is connected to said transmission () and supplies power to said transmission () via an input shaft of the transmission (), wherein said apparatus further comprises a control device (), which is electrically connected to said motor () and said transmission (), wherein said control device () is configured to determine whether a gear-position shifting is required based on rotation speed of said transmission (), if a gear-position shifting is required, regulates torque of said motor () to control said transmission () to disengage, and then regulates the rotation speed of said motor () based on the rotation speed of said transmission () to control said transmission () to engage for shifting gear-position. The clutchless transmission apparatus provided in the present invention doesn't need a clutch during gear-position shifting, and therefore it is light, simple, easy to maintain and control, and can be used in a wide range of application.