KR20220130175A - 임피던스 결정을 통한 배터리 시스템을 모니터링하기 위한 방법 및 배터리 관리 시스템 - Google Patents
임피던스 결정을 통한 배터리 시스템을 모니터링하기 위한 방법 및 배터리 관리 시스템 Download PDFInfo
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- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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Abstract
Description
도 1은 전기적 등가 모델의 예를 도시한다.
도 2는 배터리 관리 시스템의 예를 도시한다.
도 3은 전류 및 전압 쌍들의 예시적인 시퀀스를 도시한다; 그리고
도 4는 도 3의 시퀀스 섹션을 도시한다.
Claims (11)
- 배터리 시스템(202)을 모니터링하기 위한 방법에 있어서,
- 시간적으로 서로 뒤따르는 측정된 전류 및 전압 값들(Imeas,k; Umeas,k)의 쌍들의 유한 시퀀스를 제공하는 단계 - 상기 전류 및 전압 값들(Ik; Uk)의 쌍들은 대응하는 시점에서 상기 배터리 시스템(202)을 통해 흐르는 전류(IL) 및 상기 배터리 시스템(202)에 존재하는 전압(UL)을 표시함 - ;
- 상기 배터리 시스템(202)의 전기적 등가 모델을 제공하는 단계 - 상기 전기적 등가 모델은 직렬 연결된 임피던스들(Z1, Z2, Z3, Z4)을 가짐 - ;
- 상기 등가 전기적 모델의 임피던스의 초기 임피던스 파라미터 값들(Rohm,initial; Rct,initial; Reldiff,initial; Rsoldiff,initial)을 제공하는 단계;
- 상기 초기 임피던스 값들(Rohm,0; Rct,0; Reldiff,0; Rsoldiff,0)에 기초한 제1 임피던스 파라미터와 시뮬레이션된 전압 값들(Usim,1)의 유한 시퀀스의 제1 전류 값(I1) 및 상기 유한 시퀀스의 제1 측정된 전압 값(Umeas,1) 사이의 차이에 기초하여 상기 등가 전기적 모델의 임피던스(Z4)의 제1 임피던스 파라미터(Rsoldif)를 적응시키는 단계 - 이로 인해 최적화된 제1 임피던스 파라미터 값(Rsoldif,optimated)이 획득됨 - ;
- 상기 등가 전기적 모델의 임피던스들 (Z0, Z1, Z2, Z3, Z4)의 적어도 하나의 추가 임피던스 파라미터 (Rohm; Rct; Reldiff)를 적응시킴으로써 상기 등가 전기적 모델에 기초하여 획득된 시뮬레이션된 전압 값들(Usim,k)의 시퀀스 및 측정된 전류 값들(Imeas,k)의 제 1 시퀀스 및 측정된 전압 값들(Umeas,k)의 시퀀스의 편차를 최소화하는 단계 - 이로 인해 상기 적어도 하나의 추가 임피던스 파라미터의 최적화된 추가 임피던스 파라미터 값 (Rohm,optimal; Rct,optimal; Reldiff, optimal)이 획득됨 - 를 포함하는, 방법.
- 제1항에 있어서,
상기 제1 임피던스 파라미터(Rsoldif)는 상기 초기 제1 임피던스 파라미터 값에 상기 초기 제1 임피던스 파라미터 값과의 차와 상수의 곱을 더하여 조절되는, 방법.
- 제1항 또는 제2항에 있어서,
상기 편차를 최소화하는 경우, 상기 초기 파라미터 값들, 상기 제1 측정된 전류 값 및 상기 제1 측정된 전압 값에 기초하여 계산되는 보정 전압이 사용되는, 방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서,
적어도 하나의 임피던스는 전류 의존 저항을 갖는, 방법.
- 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 편차를 최소화하기 위해 신뢰영역(trust region) 방법이 사용되는, 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서,
상기 유한 시퀀스는 측정된 전류 및 전압 값들(Imeas,k; Umeas,k)의 쌍들의 더 긴 시퀀스로부터 선택되고, 및
상기 유한 시퀀스의 제1 쌍으로서, 상기 더 긴 시퀀스의 쌍은 상기 전류 값이 실질적으로 일정하게 유지되는 더 긴 시퀀스의 미리 결정된 수의 쌍들 후에 선택되거나, 상기 배터리 시스템(202)의 공칭 용량 및 전류 값의 몫의 크기가 미리 결정된 최대 C-레이트(CRmax)보다 작은, 방법.
- 제5항에 있어서,
상기 유한 시퀀스는 상기 배터리 시스템(202)의 공칭 용량 및 전류 값의 몫의 크기가 미리 결정된 최소 C-레이트(Cmin)보다 높은 미리 결정된 길이의 서브시퀀스를 포함하는, 방법.
- 제1항 내지 제7항 중 어느 한 항에 있어서,
상기 최적화된 제1 임피던스 파라미터 및 상기 최적화된 추가 임피던스 파라미터들은 후속 유한 시퀀스의 초기 임피던스 파라미터 값들로서 사용되는, 방법.
- 배터리 관리 시스템(201)으로서, 상기 배터리 관리 시스템(201)은 제1항 내지 제8항 중 어느 한 항에 따른 방법을 수행하도록 설정되는, 배터리 관리 시스템(201).
- 제9항에 있어서, 상기 배터리 관리 시스템(201)은
- 측정된 전류 및 전압 값들(Imeas,k; Umeas,k)의 쌍들을 측정하기 위한 수단; 및
- 상기 쌍들의 유한 시퀀스를 저장하기 위한 메모리를 갖는, 배터리 관리 시스템(201).
- 제7항에 있어서, 상기 메모리는 링 메모리를 갖는, 배터리 관리 시스템(201).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020105349.5 | 2020-02-28 | ||
| DE102020105349.5A DE102020105349A1 (de) | 2020-02-28 | 2020-02-28 | Verfahren und Batteriemanagementsystem zur Überwachung eines Batteriesystems durch Impedanzbestimmung |
| PCT/EP2021/054982 WO2021170866A1 (de) | 2020-02-28 | 2021-03-01 | Verfahren und batteriemanagementsystem zur überwachung eines batteriesystems durch impedanzbestimmung |
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| KR20220130175A true KR20220130175A (ko) | 2022-09-26 |
| KR102755986B1 KR102755986B1 (ko) | 2025-01-21 |
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| US (1) | US12392838B2 (ko) |
| EP (1) | EP3924742B1 (ko) |
| JP (1) | JP7467649B2 (ko) |
| KR (1) | KR102755986B1 (ko) |
| CN (1) | CN115136017B (ko) |
| DE (1) | DE102020105349A1 (ko) |
| WO (1) | WO2021170866A1 (ko) |
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| JP7652518B2 (ja) * | 2021-11-03 | 2025-03-27 | エルジー エナジー ソリューション リミテッド | 電池のインピーダンススペクトル推定装置及び方法、並びにこれを含むシステム |
| EP4325231B1 (en) * | 2021-11-03 | 2025-06-18 | LG Energy Solution, Ltd. | Device, method and system for estimating impedance spectrum of battery |
| CN117169753B (zh) * | 2023-11-03 | 2024-03-08 | 合肥国轩高科动力能源有限公司 | 串联电池的电连接件参数确定方法、装置及电子设备 |
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- 2021-03-01 JP JP2022550935A patent/JP7467649B2/ja active Active
- 2021-03-01 US US17/802,629 patent/US12392838B2/en active Active
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| EP3924742A1 (de) | 2021-12-22 |
| EP3924742C0 (de) | 2024-01-10 |
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| JP2023515529A (ja) | 2023-04-13 |
| EP3924742B1 (de) | 2024-01-10 |
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| JP7467649B2 (ja) | 2024-04-15 |
| US20230109406A1 (en) | 2023-04-06 |
| CN115136017A (zh) | 2022-09-30 |
| CN115136017B (zh) | 2025-09-16 |
| US12392838B2 (en) | 2025-08-19 |
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