Cycle-life model for graphite-LiFePO4 cells

Wang, John; Liu, Ping; Hicks-Garner, Jocelyn; Sherman, Elena; Soukiazian, Souren; Verbrugge, Mark W.; Tataria, Harshad; Musser, J.; Finamore, Peter

doi:10.1016/j.jpowsour.2010.11.134

Cited by 1,347 publications

(793 citation statements)

References 31 publications

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“…Different methods exist, most of them define the battery life as a number of cycles (discharge/charge) until the battery capacity fades to its permissible limit [34,35]. The vehicle behavior is modeled for the both considered configurations of the propulsion system (pure electric and hybrid electric) over 15 repeatable FTP-72 cycles, which correspond to an average daily mileage, followed by a battery recharge over nights, i.e., the considered battery cycle coincides with twenty-four hours period.…”

Section: Battery Life Predictionmentioning

confidence: 99%

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The Kinetic Energy Storage as an Energy Buffer for Electric Vehicles

Jivkov¹,

Draganov²

2017

Adv Automob Eng

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It is considered a hybrid driveline intended for electric vehicle in which Kinetic Energy Storage (KES) is used as an energy buffer for the load levelling over the main energy source -Li-Ion battery. Relations for KES local efficiency are worked out. Overall efficiencies of the parallel power branches are defined, and a control strategy for power split is proposed based on the alternative storage devices State of Charge (SoC). Quantity estimations of KES influence on the battery loading are obtained by evaluation of covered mileage, achievable with a single battery recharge over standard driving cycles, and by expected battery cycle-life prediction.

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Section: Battery Life Predictionmentioning

confidence: 99%

“…According to Wang et al [35] The second model by Millner [34] is an evolutionary model, which includes empirical, variable in time history, equivalent circuit model and generally is described as:…”

Section: Battery Life Predictionmentioning

confidence: 99%

The Kinetic Energy Storage as an Energy Buffer for Electric Vehicles

Jivkov¹,

Draganov²

2017

Adv Automob Eng

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“…1,14,16,18,19 Therefore, the side reactions on the anode surface are accelerated and the passive layer grows further. All these processes increase the consumption of cyclable lithium and the impedance of the cell.…”

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confidence: 99%

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Keil

Schuster

et al. 2017

J. Electrochem. Soc.

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This paper presents a lithium-ion battery aging study in which pouch cells comprising a LiCoO 2 /LiNi 0.8 Co 0.15 Al 0.05 O 2 blended cathode and a graphite anode are examined. The study focuses on the impact of temperature and discharge rate on the cycle life of the tested cells. Compared to the aging behavior of other lithium-ion cells in the literature, the cells tested here are less sensitive to the discharge rate but more vulnerable to low temperature cycling. The vulnerability to low temperature mainly comes from cathode degradation, especially of the LiCoO 2 component. This is identified by electrochemical impedance spectroscopy, differential voltage analysis and incremental capacity analysis. The cells are able to achieve 3000-5000 cycles before reaching a capacity fade of 20%, also at higher discharge rates up to 5C. All in all, the high discharge rate capability could be a general advantage of pouch cells due to less mechanical and thermal stress in their geometry. Furthermore, more attention should be paid to the cathode health in low temperature applications of lithium-ion cells containing layered oxides. This paper focuses mainly on non-invasive aging detection methods for lithium-ion cells. Post-mortem results will be published in a following paper.

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“…The cycle stability Z is a quantity which depends on a large number of parameters such as C-rate, DOD, temperature, humidity and time and which strongly varies among different battery chemistries [18]. It is therefore not possible to reliably model the cyclic lifetime so that many studies simply assume a fixed number for Z [7,9,11,12].…”

Section: Costsmentioning

confidence: 99%

A price-responsive dispatching strategy for Vehicle-to-Grid: An economic evaluation applied to the case of Singapore

Pelzer¹,

Ciechanowicz²,

Aydt³

et al. 2014

Journal of Power Sources

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A charging and dispatching strategy for optimizing profits from V2G is presented. This optimization strategy builds on temporally resolved electricity market data. A case study shows that this method turns a S$ 1000 annual loss into a S$ 130 profit. Sensitivity analyses indicate potential for further increase of profitability. Employing this strategy in other countries is assumed to yield much greater profits. a r t i c l e i n f o b s t r a c tEmploying electric vehicles as short-term energy storage could improve power system stability and at the same time create a new income source for vehicle owners. In this paper, the economic viability of this concept referred to as Vehicle-to-Grid is investigated. For this purpose, a price-responsive charging and dispatching strategy built upon temporally resolved electricity market data is presented. This concept allows vehicle owners to maximize returns by restricting market participation to profitable time periods. As a case study, this strategy is then applied using the example of Singapore. It is shown that an annual loss of S$ 1000 resulting from a non-price-responsive strategy as employed in previous works can be turned into a S$ 130 profit by applying the price-responsive approach. In addition to this scenario, realistic mobility patterns which restrict the temporal availability of vehicles are considered. In this case, profits in the range of S$ 21eS$ 121 are achievable. Returns in this order of magnitude are not expected to make Vehicle-to-Grid a viable business case, sensitivity analyses, however, show that improved technical parameters could increase profitability. It is further assumed that employing the priceresponsive strategy to other national markets may yield significantly greater returns.

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Cycle-life model for graphite-LiFePO4 cells

Cited by 1,347 publications

References 31 publications

The Kinetic Energy Storage as an Energy Buffer for Electric Vehicles

The Kinetic Energy Storage as an Energy Buffer for Electric Vehicles

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

A price-responsive dispatching strategy for Vehicle-to-Grid: An economic evaluation applied to the case of Singapore

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Cycle-life model for graphite-LiFePO4 cells

Cited by 1,347 publications

References 31 publications

The Kinetic Energy Storage as an Energy Buffer for Electric Vehicles

The Kinetic Energy Storage as an Energy Buffer for Electric Vehicles

Impact of Temperature and Discharge Rate on the Aging of a LiCoO2/LiNi0.8Co0.15Al0.05O2Lithium-Ion Pouch Cell

A price-responsive dispatching strategy for Vehicle-to-Grid: An economic evaluation applied to the case of Singapore

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Product

Resources

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Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell