High Performance Autonomous Charge Equalization in Series Connected Batteries

Kirbiš, Gregor; Selčan, David; Kos, Marko; Kramberger, Iztok

doi:10.1109/taes.2018.2848343

Cited by 6 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, lithium-ion batteries are widely used in electric vehicles (EVs), aerospace, and energy storage systems [1][2][3] because of their high energy density, high power density, lack of memory effect, low self-discharge, and long service life [4][5][6]. However, due to variations in manufacturing tolerances, operating temperatures, and aging levels, inevitable differences exist among cells in terms of electrical parameters such as internal resistance and capacity [7].…”

Section: Introductionmentioning

confidence: 99%

Multi-Mode Lithium-Ion Battery Balancing Circuit Based on Forward Converter with Resonant Reset

Zong,

Li,

Wang

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

A multi-mode active balancing circuit based on a forward converter with resonant reset is proposed to deal with unbalanced states of lithium-ion battery packs. The balancing circuit utilizes the forward converter, enabling high-power balancing. SPST relays are selected to constitute the switching matrix, and the proposed balancing circuit completes the connection of serial battery clusters to the main circuit by controlling the SPST relays, realizing the Multi-Cell-to-Multi-Cell (MC2MC) balancing method. An “adaptive selection mode based on the state of high energy battery” balancing strategy is proposed. The proposed balancing strategy allows the proposed balancing circuit to have multiple balancing modes, flexible balancing paths, and switching between different balancing processes in real time, significantly improving the balancing speed. The inherent LC resonant reset structure of the forward converter is employed to achieve MOSFET zero-voltage switching (ZVS). To optimize the balancing performance, the circuit model is built and the balancing parameters in the circuit are analyzed. An experiment with an eight-cell lithium-ion battery pack was performed to verify the balancing effect of the proposed circuit, and comparison with a typical balancing circuit was carried out. Experimental results show that the proposed balancing circuit has a faster balancing speed.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-Mode Lithium-Ion Battery Balancing Circuit Based on Forward Converter with Resonant Reset

Zong,

Li,

Wang

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The active and passive balancing methods for lithium-based batteries have also been studied thoroughly in [1], [20][21][22][23][24]. In addition, a comparison between different balancing methods has been reported by [23][24][25][26][27][28], where the balancing methodology is classified depending on the number of switches, transformers, capacitors, inductors, diodes, modularity, complexity, reliability, cost, and so on.…”

Section: Introductionmentioning

confidence: 99%

Active battery balancing system for electric vehicles based on cell charger

Amin

Budiman

Kaleg

et al. 2021

IJPEDS

View full text Add to dashboard Cite

Cell imbalance can cause negative effects such as early stopping of the battery charging and discharging process which can reduce its capacity. In the previous active balancing research, the energy used for the balancing process was taken from the cell or battery pack, resulting in drop of electric vehicle driving range. In this paper, a cell charger based battery balancing system is proposed with a reduction in the number of switches. The use of a cell charger aims to increase the usable energy of the battery pack, since the energy used for the balancing process is taken directly from the grid. The use of fewer switches aims to reduce the cost and space used on the battery management system (BMS) hardware. The charger used for the balancing process has a maximum current of 3 A and a maximum voltage of 3.65 V while the number of switches used is n+5 for n batteries. A 15S1P 200 Ah LiFePO4 battery pack consists of 15 cells used for testing purpose. The test results show that the time needed to equalize the 15 cell battery voltage reaches 6 hours from the difference between the highest and lowest battery cell voltages of 145.1 mV to 15.1 mV.

show abstract

“…Battery engineering research mainly focuses on state estimation and how to reduce battery inconsistency for higher energy conversion efficiency and longer battery life, while lacking a comprehensive analysis of the battery inconsistency generation mechanism [4,5]. e battery management system cannot control the current distribution and energy flow between batteries in parallel modules at this stage, which is directly affected by the battery connection topology.…”

Section: Introductionmentioning

confidence: 99%

A Novel Pigeon-Inspired Optimized RBF Model for Parallel Battery Branch Forecasting

Zhang

Lin

et al. 2021

Complexity

View full text Add to dashboard Cite

Battery energy storage is the pivotal project of renewable energy systems reform and an effective regulator of energy flow. Parallel battery packs can effectively increase the capacity of battery modules. However, the power loss caused by the uncertainty of parallel battery branch current poses severe challenge to the economy and safety of electric vehicles. Accuracy of battery branch current prediction is needed to improve the parallel connection. This paper proposes a radial basis function neural network model based on the pigeon-inspired optimization method and successfully applies the algorithm to predict the parallel branch current of the battery pack. Numerical results demonstrate the high accuracy of the proposed pigeon-inspired optimized RBF model for parallel battery branch forecasting and provide a useful tool for the prediction of parallel branch currents of battery packs.

show abstract

High Performance Autonomous Charge Equalization in Series Connected Batteries

Cited by 6 publications

References 22 publications

Multi-Mode Lithium-Ion Battery Balancing Circuit Based on Forward Converter with Resonant Reset

Multi-Mode Lithium-Ion Battery Balancing Circuit Based on Forward Converter with Resonant Reset

Active battery balancing system for electric vehicles based on cell charger

A Novel Pigeon-Inspired Optimized RBF Model for Parallel Battery Branch Forecasting

Contact Info

Product

Resources

About