Patents by Inventor Liya ZHENG

Liya ZHENG 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).

  • Fast screening method for used batteries using constant-current impulse ratio (CCIR) calibration
    Patent number: 11656291
    Abstract: Used batteries are screened based on a measured Constant-Current Impulse Ratio. A used battery is charged using a Constant Current (CC) until a voltage target is reached, and the current integrated to obtain the CC charge applied, QCC. Then the battery continues to be charged using a Constant Voltage (CV) of the voltage target until the charging current falls to a minimum current target. The current is integrated over the CV period to obtain the CV charge applied, QCV. The measured CCIR is the ratio of QCC to (QCC+QCV). The measured CCIR is input to a calibration curve function to obtain a modeled State of Health (SOH) value. The used battery is sorted for reuse or disposal based on the modeled SOH value. The calibration curve function is obtained by aging new batteries to obtain CCIR and SOH data that are modeled using a neural network.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: May 23, 2023
    Inventors: Minjie Xu, Liya Zheng, Yaofeng Sun
  • Fast Screening Method for Used Batteries Using Constant-Current Impulse Ratio (CCIR) Calibration
    Publication number: 20220252674
    Abstract: Used batteries are screened based on a measured Constant-Current Impulse Ratio. A used battery is charged using a Constant Current (CC) until a voltage target is reached, and the current integrated to obtain the CC charge applied, QCC. Then the battery continues to be charged using a Constant Voltage (CV) of the voltage target until the charging current falls to a minimum current target. The current is integrated over the CV period to obtain the CV charge applied, QCV. The measured CCIR is the ratio of QCC to (QCC+QCV). The measured CCIR is input to a calibration curve function to obtain a modeled State of Health (SOH) value. The used battery is sorted for reuse or disposal based on the modeled SOH value. The calibration curve function is obtained by aging new batteries to obtain CCIR and SOH data that are modeled using a neural network.
    Type: Application
    Filed: February 8, 2021
    Publication date: August 11, 2022
    Inventors: Minjie XU, Liya ZHENG, Yaofeng SUN
  • Method for measuring concentrations of metal ion in electrodeposition solutions
    Patent number: 11124890
    Abstract: Provided herein is a method for measuring a concentration of a metal ion in an electrodeposition solution. The method of the present disclosure can substantially reduce the interference of organic additives and different electrode conditions on voltammetric metal ion concentration measurements.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: September 21, 2021
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Yaofeng Sun, Shaoqin Xie, Liya Zheng
  • METHOD FOR MEASURING CONCENTRATIONS OF METAL ION IN ELECTRODEPOSITION SOLUTIONS
    Publication number: 20200347510
    Abstract: Provided herein is a method for measuring a concentration of a metal ion in an electrodeposition solution. The method of the present disclosure can substantially reduce the interference of organic additives and different electrode conditions on voltammetric metal ion concentration measurements.
    Type: Application
    Filed: April 30, 2019
    Publication date: November 5, 2020
    Inventors: Yaofeng SUN, Shaoqin XIE, Liya ZHENG