CHOSUN

리튬이온 배터리 펄스파워 예측을 위한 DCIR-SOC Relationship 구현

Metadata Downloads
Author(s)
이성준 김종훈 전영주 이동진 최연옥
Issued Date
2017
Keyword
Li-Ion Cell State-of-charge (SOC) Direct current internal resistance (DCIR) pulse power capability
Abstract
Because of differences in electrochemical characteristics among state-of-charges (SOCs) in an operating range of Li-Ion cell, it is clearly required to establish the relationship using information on the SOC and internal resistance. Therefore, this research newly implements the relationship based on two information on direct current internal resistance (DCIR) and SOC for pulse power capability of a Li-Ion cell. For implementation of the DCIR, the discharging/charging pulse currents are sequently applied to measure the voltage drop/rise during 10 seconds. Then, based on the Ohmic law, it is possible to obtain the DCIR at an arbitrary SOC range. This is made up of single repetitions of the profile, separated by a 10% SOC constant current discharge segment. After obtaining the DCIR-SOC relationship, it can be expected to provide the equivalent electrical-circuit model (EECM)-based pulse power capability prediction algorithm using the extended Kalman filter (EKF).
Authorize & License
  • AuthorizeOpen
Files in This Item:
  • There are no files associated with this item.

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.