Review
Engineering, Environmental
Hyebin Jeong, Jooyoung Jang, Changshin Jo
Summary: This article summarizes the role of the current collector (CC) in battery systems and the problems that exist, with a particular focus on coating methods as a new approach for CC modification. It analyzes the applications of different coating materials and methods in state-of-the-art battery systems.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Jie Lv, Wenji Song, Ziping Feng, Yongliang Li, Yulong Ding
Summary: Deviations between batteries in series increase with the number of cycles and can impact battery pack lifetime, cost, and security. Equalization methods are important for reducing these differences, with active equalization showing better results in reducing battery capacity differences while hybrid equalization is more effective in reducing overall battery differences. Active equalization is suitable for short period charge and discharge, while hybrid equalization is more conducive to regular maintenance of the battery pack.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Chemistry, Physical
Nurbol Tolganbek, Yerkezhan Yerkinbekova, Sandugash Kalybekkyzy, Zhumabay Bakenov, Almagul Mentbayeva
Summary: This paper systematically reviews the recent progress of olivine structured cathode materials LiCoPO4 and LiNiPO4 and their potential applications in lithium ion batteries. Various strategies such as particle size manipulation, surface modification, and structure doping can improve the performance of these materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Thermodynamics
Haiyan Yao, Aung Thinzar
Summary: In this paper, a battery equalization circuit and control strategy are proposed to improve the performance of lithium-ion batteries. The proposed circuit combines passive and active equalization circuits, with the active equalization circuit being simple and high-performing. The strategy sacrifices equalization speed to achieve a smaller temperature rise and better performance by adjusting the duty cycle and calculating the state of charge.
INTERNATIONAL JOURNAL OF LOW-CARBON TECHNOLOGIES
(2023)
Article
Energy & Fuels
Jorge Varela Barreras, Ricardo de Castro, Yihao Wan, Tomislav Dragicevic
Summary: This paper introduces a distributed multi-objective control algorithm based on a multi-agent consensus algorithm, which enhances the performance of batteries with substantial cell-to-cell differences. The algorithm has been proven in simulations to provide superior battery performance under the most demanding operating conditions.
Article
Energy & Fuels
Asadullah Khalid, Alexander Stevenson, Arif I. Sarwat
Summary: As battery usage increases, individual batteries in the pack exhibit varying voltage and SOC profiles, affecting the time needed for battery balancing. This paper analyzes a commercial BMS and proposes a constrained cycling approach to assess the performance of near-second life batteries, indicating that these batteries can be reused effectively under constrained operation.
Article
Thermodynamics
Junxian Li, Cunqiang Huang, Xiangcheng Zhang, Xu Tian, Juan An
Summary: In this paper, a high-performance equalization control strategy is proposed, which turns on the equalization again after the equalization is completed and uses the equalization time instead of the battery voltage as the indicator, achieving better equalization effect.
INTERNATIONAL JOURNAL OF LOW-CARBON TECHNOLOGIES
(2023)
Article
Energy & Fuels
Young-Hwa Park, Rae-Young Kim, Yeong-Jun Choi
Summary: This paper introduces an active voltage balancing method for secondary batteries, utilizing a multi-winding transformer and an additional auxiliary circuit to overcome the limitations of passive balancing. The validity of the proposed circuit was confirmed through mode analysis and simulation, and waveforms demonstrating balancing performance under various conditions were provided, along with comparison results with traditional methods.
Article
Computer Science, Information Systems
Heewook Song, Seongjun Lee
Summary: A balancing circuit is used in a multi-series battery pack to prevent overcharging of specific cells by reducing the voltage difference between the cells. This study proposes a variable voltage deviation method for optimizing passive cell balancing, which adjusts the threshold for balancing based on battery capacity, rated current specification, open-circuit voltage, and resistance of the balancing circuit. The proposed method was tested on a reduced battery module with three different types of battery cells and showed improved voltage management performance and efficiency.
Article
Thermodynamics
E. Jiaqiang, Bin Zhang, Yan Zeng, Ming Wen, Kexiang Wei, Zhonghua Huang, Jingwei Chen, Hao Zhu, Yuanwang Deng
Summary: This paper investigates the essence of inconsistency in lithium-ion batteries as State-Of-Charge (SOC) inconsistency, proposing a method to describe battery inconsistency using SOC disparity and studying the equalization control strategy. Through simulations and experiments, it is shown that active equalization significantly improves cell inconsistency and enhances energy utilization in the battery pack during charging and discharging processes. The proposed SOC estimation method meets accuracy requirements, and the equalization strategies effectively minimize SOC and voltage disparities among battery cells.
Article
Engineering, Electrical & Electronic
Mohammad K. Al-Smadi, Jaber A. Abu Qahouq
Summary: This article introduces a current-mode controller for switched-inductor topology that achieves voltage balancing between battery cells or modules in a battery pack with peak efficiency. It overcomes the drawbacks of conventional fixed duty cycle schemes by controlling the balancing current and selecting an efficient balancing current reference. The article also presents a battery balancing algorithm for open circuit voltage balancing, which is a more accurate indicator of state-of-charge compared to terminal voltage. Experimental results from a three-cell battery pack prototype validate the effectiveness of the proposed method under different operation modes.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Chemistry, Physical
Leonard Jahn, Felix Katzer, Michael A. Danzer
Summary: The study uncovers the impact of lithium deposition on cell voltage and thickness, demonstrating that dilation behavior and voltage analysis can be used to detect LD, proposing a Bayes algorithm for combined data detection.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Ryan S. Longchamps, Xiao-Guang Yang, Shanhai Ge, Teng Liu, Chao-Yang Wang
Summary: By utilizing a self-heating structure, the huge potential of current battery materials can be unleashed to provide high energy and power performance in extreme low-temperature conditions. The heating process efficiently increases the battery temperature with minimal energy consumption. The chemistry-agnostic nature of self-heating can enhance the rate capability of lithium-ion and lithium metal batteries, expanding the performance envelopes of battery materials for electrified transportation.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Electrical & Electronic
Rui Wang, Chunyue Song, Wenjun Huang, Jun Zhao
Summary: This paper proposes a model-free and adaptive optimization method, extremum seeking control (ESC), to improve efficiency and battery equalization of lithium-ion battery packs under different power loads and external conditions. The results demonstrate that ESC can effectively enhance efficiency and battery equalization, and it performs reliably and effectively under different external conditions.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Chemistry, Multidisciplinary
Shasha Qu, Wenbin Wu, Yunfan Wu, Yanping Zhuang, Jie Lin, Laisen Wang, Qiulong Wei, Qingshui Xie, Dong-Liang Peng
Summary: In this study, LiF thin film was sputtered on LCO electrodes to enhance electrochemical performance and reduce voltage polarization. The various polarization components were quantified, and the improved properties of LiF-coated LCO were confirmed through electrochemical tests and in-situ XRD experiments. This work provides a reference for quantifying polarization components and suggests the potential use of LiF film coating in developing similar cathode materials.
