Thermal Modelling Analysis of Spiral Wound Supercapacitor under Constant-Current Cycling

Wang, Kai; Li, Liwei; Yin, Huaixian; Zhang, Tiezhu; Wan, Wubo

doi:10.1371/journal.pone.0138672

Cited by 32 publications

(13 citation statements)

References 20 publications

(22 reference statements)

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“…Based on the screened data, the operating time between failures was calculated and imported into Minitab [20,21]. The "Reliability/Survival Statistics" tool was used to perform the maximum likelihood estimation for four candidate distributions (the exponential distribution, logarithmic normal distribution, two-parameter Weibull distribution, and three-parameter Weibull distribution).…”

Section: Resultsmentioning

confidence: 99%

Reliability analysis of subway vehicles based on the data of operational failures

Yin

Wang

Qin

et al. 2017

J Wireless Com Network

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A large quantity of failure data for subway vehicles was collected from long-term field investigations and technical exchanged. These failure data has a guiding significance for preserving subway system. By preprocessing (screening, refining, and classification) the original data and statistical analysis, we establish some selected model, then we use A-D test to verify the degree of fitting in selected model so that we can determine the optimal failure distribution model, and then the reliability characteristic quantities could be calculated by the optimal failure distribution model. These reliability characteristic quantities can predict failure rate, failure number, etc. It can be used to assist proper maintenance scheduling to reduce the occurrence of accidents and significant to important practical guiding.

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Section: Resultsmentioning

confidence: 99%

Reliability analysis of subway vehicles based on the data of operational failures

Yin

Wang

Qin

et al. 2017

J Wireless Com Network

Self Cite

View full text Add to dashboard Cite

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“…However, if the lithium insertion ability of the anode is small, lithium metal may be deposited on the anode [44]. The cell response, in this case, is not extremely catastrophic (resulting in only swelling of the cell due to internal gas formation) because of the lower charging current but a more catastrophic response (fire or explosion) could occur when overcharged at a higher current rate [18]. The heat generated by the applied current does not vary its behavior like the cell surface temperature but increases proportionally with current rates.…”

Section: Electrochemical-thermal Reaction Mechanisms Governing Equationmentioning

confidence: 99%

“…The internal temperature and structural degradation of the lithium-ion cell was investigated [17] under a nail penetration test with different penetration position for lithium ion cells, where they found out that internal temperature is higher than the surface temperature. The variation between the inner temperature and surface temperature of a supercapacitor was investigated [10] with three dimensional symmetric thermal model based on the heating rate measured during cycling [9] The modeling of increased temperature effect was studied in relation to the charge-discharge current of the supercapacitor [18] which shows that the temperature response is dependent on the current applied. The effect of thermal charging on the supercapacitor by inducing an external heat condition was reported in [19].…”

Section: Introductionmentioning

confidence: 99%

Lithium-Ion Capacitor Safety Testing for Commercial Application

2019

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The lithium-ion capacitor (LIC) is a recent innovation in the area of electrochemical energy storage that hybridizes lithium-ion battery anode material and an electrochemical double layer capacitor cathode material as its electrodes. The high power compared to batteries and higher energy compared to capacitors has made it a promising energy-storage device for powering hand-held and portable electronic systems/consumer electronics, hybrid electric vehicles, and electric vehicles. The swelling and gassing of the LIC when subjected to abuse conditions is still a critical issue concerning the safe application in power electronics and commercial devices. However, it is imperative to carry out a thorough investigation that characterizes the safe operation of LICs. We investigated and studied the safety of LIC for commercial applications, by conducting a comprehensive abuse tests on LIC 200 F pouch cells with voltage range from 3.8 V to 2.2 V manufactured by General Capacitors LLC. The abuse tests include overcharge, external short circuit, crush (flat metal plate and blunt indentation), nail penetration test, and external heat test.

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“…In order to further explore the P-PCG as electrode material of supercapacitor in practical application, a two-dimensional thermal model for commonly used coiling supercapacitor was studied in this research which consists of a core region, column of air and, coating [26,27]. The size of supercapacitor is 10 mm × 65 mm, as shown in Figure 9.…”

Section: Establish Simulation Modelmentioning

confidence: 99%

Analyzing Electrical Performance and Thermal Coupling of Supercapacitor Assembled Using Phosphorus-Doped Porous Carbon/Graphene Composite

et al. 2019

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A novel phosphorus-doped porous carbon/graphene composite was adopted as electrode material of super-capacitor, which showed excellent electrochemical performance compared with carbon material without phosphorus heteroatom by means of cyclic voltammetry, the charge/discharge property, impedance characteristics, cycle life, and stability. The P-enriched carbons sample offered an outstanding capacitive behavior, which had specific capacitance 277 F/g and was able to withstand at a wide voltage window of 1.6 V with 90.8% performance retention after 10,000 cycles at a current density of 10 Ag−1, providing a higher energy density 26.42 Wh/kg. In addition, because the thermal effect in charge and discharge process can make the supercapacitor temperature rise rapidly in a short time and affect the electrical performance, temperature characteristic is one of the important characteristics to be considered in practical application. In this paper, a two-dimensional thermal model for commonly used coiling supercapacitor with p-doped porous carbon/graphene composite as electrode material was established, and the temperature distribution of supercapacitor and the variation of internal temperature under different conditions were analyzed by finite element method. The results show that the maximum temperature appears near the center, and the maximum temperature is related to the applied current and the number of cycles. With the increase of the current, the maximum internal temperature is increased sharply, and it is kept constant after the number of cycles reaches a certain value. Cooling measures should be taken when the maximum temperature exceeds the allowable temperature range.

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Thermal Modelling Analysis of Spiral Wound Supercapacitor under Constant-Current Cycling

Cited by 32 publications

References 20 publications

Reliability analysis of subway vehicles based on the data of operational failures

Reliability analysis of subway vehicles based on the data of operational failures

Lithium-Ion Capacitor Safety Testing for Commercial Application

Analyzing Electrical Performance and Thermal Coupling of Supercapacitor Assembled Using Phosphorus-Doped Porous Carbon/Graphene Composite

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