Method for determining battery condition and electronic device for performing the method

The battery state determination method addresses inaccuracies in estimating SOC and SOH by refining model parameters and updating degradation factors, ensuring precise battery capacity and health prediction across diverse usage conditions.

KR1020260113518APending Publication Date: 2026-07-21SAMSUNG ELECTRONICS CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
KR1020250005033
Authority / Receiving Office
KR · KR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing battery state estimation methods struggle to accurately predict battery status information under conditions of accelerated degradation due to high-speed charging, discharging, or extreme temperatures, leading to inaccuracies in estimating state of charge (SOC) and health (SOH).

Method used

A battery state determination method that involves determining model parameters using sensing data, updating degradation parameters based on integrated current values, and refining battery models to accurately estimate SOC and SOH by incorporating look-up tables for open circuit voltage (OCV) and model overvoltages.

Benefits of technology

Enhances the accuracy of battery state estimation by accurately reflecting degradation states, thereby improving the prediction of battery capacity and health, even under varying usage conditions.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A battery state determination method according to one embodiment may include: determining a first value of a model parameter of a battery model that estimates the state of a battery based on first sensing data measured from one or more sensors connected to a battery of an electronic device; determining a first state of charge (SOC) of a battery using the battery model and the first sensing data when the first value of the model parameter corresponds to a first threshold value; determining a second SOC when the second value of the model parameter corresponds to a second threshold value set for the model parameter; determining an integrated current value consumed in the battery during an interval between the first SOC and the second SOC; updating the value of a degradation parameter of the battery model based on the first SOC, the second SOC, and the integrated current value; and determining the state of the battery using the battery model in which the value of the degradation parameter has been updated.
Need to check novelty before this filing date? Find Prior Art