Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity Analysis
Accurate and reliable state of charge (SOC) estimation is a key enabling technique for large format lithium-ion battery pack due to its vital role in battery safety and effective management. This paper tries to make three contributions to existing literatures through robust algorithms. (1) Observer...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Hindawi Limited
2015-01-01
|
Series: | Mathematical Problems in Engineering |
Online Access: | http://dx.doi.org/10.1155/2015/573184 |
id |
doaj-efc3eddb674542cca1ef19b3741a0929 |
---|---|
record_format |
Article |
spelling |
doaj-efc3eddb674542cca1ef19b3741a09292020-11-25T00:18:36ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472015-01-01201510.1155/2015/573184573184Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity AnalysisTing Zhao0Jiuchun Jiang1Caiping Zhang2Kai Bai3Na Li4National Active Distribution Network Technology Research Center (NANTEC), Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaNational Active Distribution Network Technology Research Center (NANTEC), Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaNational Active Distribution Network Technology Research Center (NANTEC), Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaState Grid Jibei Electric Power Co., Ltd., Research Institute, No. 1 Dizang’an Nanxiang Fuxingmenwai Street, Beijing 100045, ChinaState Grid Jibei Electric Power Co., Ltd., Research Institute, No. 1 Dizang’an Nanxiang Fuxingmenwai Street, Beijing 100045, ChinaAccurate and reliable state of charge (SOC) estimation is a key enabling technique for large format lithium-ion battery pack due to its vital role in battery safety and effective management. This paper tries to make three contributions to existing literatures through robust algorithms. (1) Observer based SOC estimation error model is established, where the crucial parameters on SOC estimation accuracy are determined by quantitative analysis, being a basis for parameters update. (2) The estimation method for a battery pack in which the inconsistency of cells is taken into consideration is proposed, ensuring all batteries’ SOC ranging from 0 to 1, effectively avoiding the battery overcharged/overdischarged. Online estimation of the parameters is also presented in this paper. (3) The SOC estimation accuracy of the battery pack is verified using the hardware-in-loop simulation platform. The experimental results at various dynamic test conditions, temperatures, and initial SOC difference between two cells demonstrate the efficacy of the proposed method.http://dx.doi.org/10.1155/2015/573184 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ting Zhao Jiuchun Jiang Caiping Zhang Kai Bai Na Li |
spellingShingle |
Ting Zhao Jiuchun Jiang Caiping Zhang Kai Bai Na Li Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity Analysis Mathematical Problems in Engineering |
author_facet |
Ting Zhao Jiuchun Jiang Caiping Zhang Kai Bai Na Li |
author_sort |
Ting Zhao |
title |
Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity Analysis |
title_short |
Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity Analysis |
title_full |
Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity Analysis |
title_fullStr |
Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity Analysis |
title_full_unstemmed |
Robust Online State of Charge Estimation of Lithium-Ion Battery Pack Based on Error Sensitivity Analysis |
title_sort |
robust online state of charge estimation of lithium-ion battery pack based on error sensitivity analysis |
publisher |
Hindawi Limited |
series |
Mathematical Problems in Engineering |
issn |
1024-123X 1563-5147 |
publishDate |
2015-01-01 |
description |
Accurate and reliable state of charge (SOC) estimation is a key enabling technique for large format lithium-ion battery pack due to its vital role in battery safety and effective management. This paper tries to make three contributions to existing literatures through robust algorithms. (1) Observer based SOC estimation error model is established, where the crucial parameters on SOC estimation accuracy are determined by quantitative analysis, being a basis for parameters update. (2) The estimation method for a battery pack in which the inconsistency of cells is taken into consideration is proposed, ensuring all batteries’ SOC ranging from 0 to 1, effectively avoiding the battery overcharged/overdischarged. Online estimation of the parameters is also presented in this paper. (3) The SOC estimation accuracy of the battery pack is verified using the hardware-in-loop simulation platform. The experimental results at various dynamic test conditions, temperatures, and initial SOC difference between two cells demonstrate the efficacy of the proposed method. |
url |
http://dx.doi.org/10.1155/2015/573184 |
work_keys_str_mv |
AT tingzhao robustonlinestateofchargeestimationoflithiumionbatterypackbasedonerrorsensitivityanalysis AT jiuchunjiang robustonlinestateofchargeestimationoflithiumionbatterypackbasedonerrorsensitivityanalysis AT caipingzhang robustonlinestateofchargeestimationoflithiumionbatterypackbasedonerrorsensitivityanalysis AT kaibai robustonlinestateofchargeestimationoflithiumionbatterypackbasedonerrorsensitivityanalysis AT nali robustonlinestateofchargeestimationoflithiumionbatterypackbasedonerrorsensitivityanalysis |
_version_ |
1725375673876348928 |