Fast charging technique for high power lithium iron phosphate batteries: A cycle life analysis

Anseán, David; González, M.; Viera, J.C.; García, Víctor M.; Blanco, C.; Valledor, M.

doi:10.1016/j.jpowsour.2013.03.044

Cited by 187 publications

(125 citation statements)

References 16 publications

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“…The result for the thermal capacity is C cell = 75.6 J/K, which is in accordance with the value of 75.56 J/K of reference [15], which was measured by means of a direct adjustment of the temperature-time data in the transient area of a thermal cycle once the thermal resistances were measured in a stationary state. The total thermal resistance (internal and external) can be determined by means of the time constant of Equation (10). It has been obtained that R th = τ th /C cell = (940 s)/(75.6 J/K) = 12.4 K/W.…”

Section: Resultsmentioning

confidence: 99%

“…The fast battery charging technique thermally studied here was previously reported in [10], and was validated to attain quick recharges while causing no accelerated cell degradation [11]. The proposed thermal model is similar to several thermal models found in the literatures [12][13][14][15], but it presents a low computational complexity, and utilizes the external cell surface temperature as the main variable to infer heat generation during operation.…”

Section: Introductionmentioning

confidence: 87%

“…The 1C-CV steps complete at the charge at slow speed and reduce the temperature. More details of this method can be found in our previous work [10,11].…”

Section: Methodsmentioning

confidence: 99%

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Thermal Analysis of a Fast Charging Technique for a High Power Lithium-Ion Cell

et al. 2016

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Abstract:The cell case temperature versus time profiles of a multistage fast charging technique (4C-1C-constant voltage (CV))/fast discharge (4C) in a 2.3 Ah cylindrical lithium-ion cell are analyzed using a thermal model. Heat generation is dominated by the irreversible component associated with cell overpotential, although evidence of the reversible component is also observed, associated with the heat related to entropy from the electrode reactions. The final charging stages (i.e., 1C-CV) significantly reduce heat generation and cell temperature during charge, resulting in a thermally safe charging protocol. Cell heat capacity was determined from cell-specific heats and the cell materials' thickness. The model adjustment of the experimental data during the 2 min resting period between discharge and charge allowed us to calculate both the time constant of the relaxation process and the cell thermal resistance. The obtained values of these thermal parameters used in the proposed model are almost equal to those found in the literature for the same cell model, which suggests that the proposed model is suitable for its implementation in thermal management systems.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 87%

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Thermal Analysis of a Fast Charging Technique for a High Power Lithium-Ion Cell

et al. 2016

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“…Researchers have been studying the fast-charging impact caused by increasing the current rate of the charging profile [15][16][17][18]. For example, Abdel-Monem et al [19,20] showed the changes in the voltage response of a battery triggered by two charging profiles: the constant current-constant voltage (CC-CV), and constant current with negative pulse-constant voltage (CCNP-CV) profiles.…”

Section: Introductionmentioning

confidence: 99%

Combining an Electrothermal and Impedance Aging Model to Investigate Thermal Degradation Caused by Fast Charging

et al. 2018

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Fast charging is an exciting topic in the field of electric and hybrid electric vehicles (EVs/HEVs). In order to achieve faster charging times, fast-charging applications involve high-current profiles which can lead to high cell temperature increase, and in some cases thermal runaways. There has been some research on the impact caused by fast-charging profiles. This research is mostly focused on the electrical, thermal and aging aspects of the cell individually, but these factors are never treated together. In this paper, the thermal progression of the lithium-ion battery under specific fast-charging profiles is investigated and modeled. The cell is a Lithium Nickel Manganese Cobalt Oxide/graphite-based cell (NMC) rated at 20 Ah, and thermal images during fast-charging have been taken at four degradation states: 100%, 90%, 85%, and 80% State-of-Health (SoH). A semi-empirical resistance aging model is developed using gathered data from extensive cycling and calendar aging tests, which is coupled to an electrothermal model. This novel combined model achieves good agreement with the measurements, with simulation results always within 2°C of the measured values. This study presents a modeling methodology that is usable to predict the potential temperature distribution for lithium-ion batteries (LiBs) during fast-charging profiles at different aging states, which would be of benefit for Battery Management Systems (BMS) in future thermal strategies.

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“…As mentioned before, all active materials suffer under degradation by cycling [20] [21] [22] via mechanical stress and specific chemical depending mechanisms. Based on volumetric change of active material and dissolution and growth of SEI micro, cracks could be observed which are leading to lithium plating [23].…”

Section: Introductionmentioning

confidence: 99%

Ageing Behavior of LiNi0.80 Co0.15Al0.05O2 Cathode Based Lithium Ion Cells—Influence of Phase Transition Processes

Betzin¹,

Wolfschmidt²

2018

MSA

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In this paper, commercial lithium ion battery cells consisting of graphite based anode and LiNi 0.80 Co 0.15 Al 0.05 O 2 (NCA) oxide based cathode were investigated regarding their aging behavior. The capacity loss is dependent on the state of charge (SOC) whereas the battery is operated with partial cycles at defined SOCs. The structural change of the positive electrode material is identified as dominating aging process. Especially grid services such as primary control reserve are of economic interest for battery system operators. In this application, small charge and discharge cycles are the main operation mode. Considering the operation of single battery storage systems in a virtual storage power plant, different states of charges are much more of interest. Thus the battery aging behavior of lithium ion cells with NCA based cathode material with respect to cycling at specific state of charge with small depth of discharge (DOD) is investigated. The results in this paper provide understanding of small DOD cycling at given SOC behavior which is necessary for NCA lifetime prediction in this particular case, especially in virtual storage plant with various storage systems and thus various SOCs for delivery primary reserve the small DOD behavior which has an important impact on efficiency and economy. It is a key finding, which aging mechanisms are essential in order to optimize the cell operation and adapt it to system performance.

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Fast charging technique for high power lithium iron phosphate batteries: A cycle life analysis

Cited by 187 publications

References 16 publications

Thermal Analysis of a Fast Charging Technique for a High Power Lithium-Ion Cell

Thermal Analysis of a Fast Charging Technique for a High Power Lithium-Ion Cell

Combining an Electrothermal and Impedance Aging Model to Investigate Thermal Degradation Caused by Fast Charging

Ageing Behavior of LiNi<SUB>0.80</SUB> Co<SUB>0.15</SUB>Al<SUB>0.05</SUB>O<SUB>2</SUB> Cathode Based Lithium Ion Cells—Influence of Phase Transition Processes

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Fast charging technique for high power lithium iron phosphate batteries: A cycle life analysis

Cited by 187 publications

References 16 publications

Thermal Analysis of a Fast Charging Technique for a High Power Lithium-Ion Cell

Thermal Analysis of a Fast Charging Technique for a High Power Lithium-Ion Cell

Combining an Electrothermal and Impedance Aging Model to Investigate Thermal Degradation Caused by Fast Charging

Ageing Behavior of LiNi&lt;SUB&gt;0.80&lt;/SUB&gt; Co&lt;SUB&gt;0.15&lt;/SUB&gt;Al&lt;SUB&gt;0.05&lt;/SUB&gt;O&lt;SUB&gt;2&lt;/SUB&gt; Cathode Based Lithium Ion Cells—Influence of Phase Transition Processes

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Ageing Behavior of LiNi<SUB>0.80</SUB> Co<SUB>0.15</SUB>Al<SUB>0.05</SUB>O<SUB>2</SUB> Cathode Based Lithium Ion Cells—Influence of Phase Transition Processes