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Health State Estimation of Lithium-Ion Batteries for Multi-Step Fast Charging Scenarios
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Weiping SONG1, Dan LIU1, Yaohua LI2, Qianlong FENG3
Chinese Journal of Automotive Engineering | 2024, 14(6) : 1048 - 1060
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Chinese Journal of Automotive Engineering | 2024, 14(6): 1048-1060
Green and Low-Carbon Technologies Seetion
Health State Estimation of Lithium-Ion Batteries for Multi-Step Fast Charging Scenarios
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Weiping SONG1, Dan LIU1, Yaohua LI2, Qianlong FENG3
Affiliations
  • 1 School of Automobile Shaanxi Institute of Technology Xi'an 710300 China
  • 2 School of Automobile Chang'an University Xi'an 710064 China
  • 3 China Automotive Technology and Research Center Co., Ltd. Tianjin 300300 China
doi: 10.3969/j.issn.2095–1469.2024.06.12
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In response to the challenges posed by the widespread adoption of fast charging in lithiumion battery health assessment, this study develops a stateofhealth estimation model for dynamic fastcharging scenarios. Twelve direct features are extracted from the partial voltage curve during the fast charging process, followed by a comprehensive analysis of degradation mechanisms strongly correlated with these features. Subsequently, feature selection is conducted based on degradation mechanisms and correlation analysis, and the radial basis function neural network (RBFNN) is deployed to establish the estimation model. The validation results indicate that the constructed data features exhibit excellent generalization across various battery degradation paths, improving accuracy by over 17% compared to traditional feature selection methods. Satisfactory estimation results are obtained even under different fast charging protocols and with a smaller training dataset.

lithium-ion battery  /  state of health  /  multi-step fast charging  /  feature selection
Weiping SONG, Dan LIU, Yaohua LI, Qianlong FENG. Health State Estimation of Lithium-Ion Batteries for Multi-Step Fast Charging Scenarios[J]. Chinese Journal of Automotive Engineering, 2024 , 14 (6) : 1048 -1060 . DOI: 10.3969/j.issn.2095–1469.2024.06.12
Year 2024 volume 14 Issue 6
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Article Info
doi: 10.3969/j.issn.2095–1469.2024.06.12
  • Receive Date:2024-02-20
  • Online Date:2025-07-20
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  • Received:2024-02-20
  • Revised:2024-04-13
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    1 School of Automobile Shaanxi Institute of Technology Xi'an 710300 China
    2 School of Automobile Chang'an University Xi'an 710064 China
    3 China Automotive Technology and Research Center Co., Ltd. Tianjin 300300 China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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