A control strategy for dynamic balancing of lithium iron phosphate battery based on the performance of cell voltage

Qi, Guoguang; Li, Xiangjun; Yang, Daiming

doi:10.1109/itec-ap.2014.6941212

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…Similarly, the comparison diagrams of DC internal resistance, polarization resistance, and ohmic resistance to SOC sensitivity as shown in Figure 10 are obtained. It can be seen from the figure that the polarization resistance is more affected by SOC than DC internal resistance [30,31]. SOC has a greater influence on DC internal resistance than ohmic resistance.…”

Section: Relationship Between Internal Resistance Of Lithium Iron Phosphate Battery and State Of Charge (Soc)mentioning

confidence: 93%

The Influence of Temperature on the Capacity of Lithium Ion Batteries with Different Anodes

Wang

et al. 2021

Energies

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Temperature is considered to be an important indicator that affects the capacity of a lithium ion batteries. Therefore, it is of great significance to study the relationship between the capacity and temperature of lithium ion batteries with different anodes. In this study, the single battery is used as the research object to simulate the temperature environment during the actual use of the power battery, and conduct a charge and discharge comparison test for lithium iron phosphate battery, lithium manganate battery and lithium cobalt oxide battery. In the test of capacity characteristics of lithium ion batteries of three different cathode materials at different temperatures, the optimal operating temperature range of the lithium ion battery is extracted from the discharge efficiencies obtained. According to the research results, the discharge capacity of a lithium ion battery can be approximated by a cubic polynomial of temperature. The optimal operating temperature of lithium ion battery is 20–50 °C within 1 s, as time increases, the direct current (DC) internal resistance of the battery increases and the slope becomes smaller. Between 1 s and 10 s, the DC internal resistance of the battery basically shows a linear relationship with time. In the charge and discharge process, when state of charge (SOC) 0% and SOC 100%, the internal resistance of the battery is the largest. The SOC has the greatest impact on the polarization internal resistance, and the smallest impact on the ohmic internal resistance.

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“…SOC differences between cells can lead to inconsistent aging rates. It is worth mentioning that, inconsistencies between SOCs will cause depth of discharging (DOD) differences in EVs, which will further affect the aging rate of batteries, thereby exacerbating inconsistencies between batteries 34,35 …”

Section: Libs Inconsistencymentioning

confidence: 99%

“…The battery inconsistency cannot be completely eliminated, but it can be restricted within a reasonable range 34,36 . Various method can be applied to improve the battery inconsistency.…”

Section: Libs Inconsistencymentioning

confidence: 99%

A comprehensive review on inconsistency and equalization technology of lithium‐ion battery for electric vehicles

et al. 2020

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The rapid growth of transportation demand has been enlarged strongly which has promoted electric vehicles powered by lithium-ion batteries. However, the inconsistencies within the battery pack will deteriorate over the lifecycle and affect the performance of electric vehicles. Therefore, various thermal management systems and equalization systems have been applied in battery management system to deal with the inconsistencies, extend battery service life, and improve safety performance. This review summarizes the origination of inconsistency within lithium-ion batteries from production to usage process, and then introduces the classification methods and application scenarios of the balance management system in detail. Based on the circuit topology, equalization systems can be classified into passive and active topologies. Active topologies

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“…There are two groups of factors that influence the cell imbalance which is said to be intrinsic or extrinsic. The intrinsic factors are those factors associated with manufacturing processes, that leads to variance in the amount of active material and internal resistance [19], while the extrinsic factors are those that include the manner of connection (serial/parallel), charge/discharge current, and heat dissipation [20]. The battery pack is said to be balanced if at, some SOC, all cells are at the same SOC.…”

Section: Battery Cell Balancingmentioning

confidence: 99%

Review of Battery Cell Balancing Methodologies for Optimizing Battery Pack Performance in Electric Vehicles

Omariba

Zhang

Sun³

2019

IEEE Access

144

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Batteries are gaining entry into every home and office for they are widely used because of their variant benefits. However, these batteries are prone to failure caused by charge imbalance in the batteries connected in either series or parallel, which can sometimes be catastrophic and hence they require to be properly monitored in a real-time manner. There exist many battery balancing schemes which are broadly grouped into either passive or active schemes. All these schemes have their own advantages and disadvantages, and hence it is upon the user to decide on which scheme will best work for them. However, research has proven that the hybrid scheme will be the best as it couples the benefits of all schemes. This study will review the various battery cell balancing methodologies and evaluate their relationship with battery performance. At present there are a few studies tackling the mechanical vibration of battery balancing performance. This study shows that battery balancing performance during long-term should be evaluated from various temperature and vibration frequencies.INDEX TERMS Battery cell balancing, electric vehicles, hybrid schemes, and performance optimization.

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A control strategy for dynamic balancing of lithium iron phosphate battery based on the performance of cell voltage

Cited by 9 publications

References 8 publications

The Influence of Temperature on the Capacity of Lithium Ion Batteries with Different Anodes

A comprehensive review on inconsistency and equalization technology of lithium‐ion battery for electric vehicles

Review of Battery Cell Balancing Methodologies for Optimizing Battery Pack Performance in Electric Vehicles

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