Patents by Inventor Qiyuan Liang

Qiyuan Liang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9718374
    Abstract: A charging system for an electric vehicle and an electric vehicle are provided. The charging system comprises: a power battery; a charge-discharge socket; a bidirectional DC/DC module having a first DC terminal connected with a first terminal of the power battery and a second DC terminal connected with a second terminal of the power battery; a bidirectional DC/AC module having a first DC terminal connected with the second terminal of the power battery and a second DC terminal connected with the first terminal of the power battery; a charge-discharge control module having a first terminal connected with the AC terminal of the bidirectional DC/AC module and a second terminal connected with the charge-discharge socket; and a controller module connected with the charge-discharge control module, and configured to control the charge-discharge control module according to a current operation mode of the charging system.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: August 1, 2017
    Assignees: SHENZHEN BYD AUTO R&D COMPANY LIMITED, BYD COMPANY LIMITED
    Inventors: Zheqing Tang, Zhiyong Du, Fu Tang, Jun Zhao, Qiyuan Liang
  • Patent number: 9290105
    Abstract: An active discharging system for an electric vehicle and an electric vehicle including the same are provided. The active discharging system includes a power battery; a bus capacitor; a charge-discharge socket; a bidirectional DC/DC module; a driving control switch; a bidirectional DC/AC module; a motor control switch connected with the bidirectional DC/AC module and a motor; a charge-discharge control module connected with the bidirectional DC/AC module and the charge-discharge socket; and a controller module configured to control the driving control switch, the motor control switch and the charge-discharge control module according to a current operation mode of the active discharging system, to control the bus capacitor to continue charging the power battery after a charge is finished, and to control the bus capacitor to continue discharging after a discharge is finished until a voltage across the bus capacitor is less than a first predetermined value.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: March 22, 2016
    Assignees: Shenzhen BYD Auto R&D Company Limited, BYD Company Limited
    Inventors: Jun Zhao, Shuaihui Li, Fu Tang, Zheqing Tang, Yingtao Li, Qiyuan Liang
  • Publication number: 20150008850
    Abstract: An active discharging system for an electric vehicle and an electric vehicle including the same are provided. The active discharging system includes a power battery; a bus capacitor; a charge-discharge socket; a bidirectional DC/DC module; a driving control switch; a bidirectional DC/AC module; a motor control switch connected with the bidirectional DC/AC module and a motor; a charge-discharge control module connected with the bidirectional DC/AC module and the charge-discharge socket; and a controller module configured to control the driving control switch, the motor control switch and the charge-discharge control module according to a current operation mode of the active discharging system, to control the bus capacitor to continue charging the power battery after a charge is finished, and to control the bus capacitor to continue discharging after a discharge is finished until a voltage across the bus capacitor is less than a first predetermined value.
    Type: Application
    Filed: December 31, 2012
    Publication date: January 8, 2015
    Applicants: BYD COMPANY LIMITED, SHENZHEN BYD AUTO R&D COMPANY LIMITED
    Inventors: Jun Zhao, Shuaihui Li, Fu Tang, Zheqing Tang, Yingtao Li, Qiyuan Liang
  • Publication number: 20140368170
    Abstract: A charging system for an electric vehicle and an electric vehicle are provided. The charging system comprises: a power battery; a charge-discharge socket; a bidirectional DC/DC module having a first DC terminal connected with a first terminal of the power battery and a second DC terminal connected with a second terminal of the power battery; a bidirectional DC/AC module having a first DC terminal connected with the second terminal of the power battery and a second DC terminal connected with the first terminal of the power battery; a charge-discharge control module having a first terminal connected with the AC terminal of the bidirectional DC/AC module and a second terminal connected with the charge-discharge socket; and a controller module connected with the charge-discharge control module, and configured to control the charge-discharge control module according to a current operation mode of the charging system.
    Type: Application
    Filed: December 31, 2012
    Publication date: December 18, 2014
    Applicants: BYD COMPANY LIMITED, SHENZHEN BYD AUTO R&D COMPANY LIMITED
    Inventors: Zheqing Tang, Zhiyong Du, Fu Tang, Jun Zhao, Qiyuan Liang