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:
May. 23, 2023
Filed:
Feb. 08, 2021
Hong Kong Applied Science and Technology Research Institute Company, Limited, Hong Kong, HK;
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, Q. 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, Q. The measured CCIR is the ratio of Qto (Q+Q). 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.