METHOD OF ESTIMATING A STATE OF BATTERY AND CONTROL DEVICE FOR THE SAME

A method for estimating the state of a battery according to an embodiment of the present invention includes the steps of: detecting an input/output current and input/output voltage of a battery; estimating the State of Charge (SOC) of the battery; estimating an initial value of the State Of Energy (...

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Bibliographic Details
Main Authors JEONG DOO JIN, SEO JEONG MIN, KIM YONG UK, KO KYUNG CHUL
Format Patent
LanguageEnglish
Korean
Published 11.05.2023
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Summary:A method for estimating the state of a battery according to an embodiment of the present invention includes the steps of: detecting an input/output current and input/output voltage of a battery; estimating the State of Charge (SOC) of the battery; estimating an initial value of the State Of Energy (SOE) of the battery at a first time using the SOC of the battery; estimating a change value in the SOE of the battery by integrating the product of the input/output current and the input/output voltage divided by total energy from a first time point to a second time point; and obtaining the amount of chargeable and dischargeable energy of the battery using the initial value and the change value. It is possible to accurately measure the SOE of a battery. 본 발명의 일 실시예에 따른 배터리의 상태 추정 방법은, 배터리의 입출력 전류와 입출력 전압을 검출하는 단계, 상기 배터리의 SOC(State Of Charge)를 추정하는 단계, 상기 배터리의 SOC를 이용하여, 제1 시점에서 상기 배터리의 SOE(State Of Energy)의 초기값을 추정하는 단계, 상기 입출력 전류와 상기 입출력 전압의 곱을 전체 에너지로 나눈 값을 상기 제1 시점부터 제2 시점까지 적산하여 상기 배터리의 SOE의 변화값을 추정하는 단계, 및 상기 초기값과 상기 변화값을 이용하여 상기 배터리의 충방전 가능한 에너지량을 획득하는 단계를 포함한다.
Bibliography:Application Number: KR20210150232