Reversible and irreversible heat generation of NCA/Si–C pouch cell during electrochemical energy-storage process

Bai, Ying; Liu, Limin; Li, Yu; Chen, Guanghai; Zhao, Huahua; Wang, Zhaohua; Wu, Chuan; Ma, Hongyun; Wang, Xinquan; Cui, Hongyue; Zhou, Jiang

doi:10.1016/j.jechem.2018.02.016

Cited by 60 publications

(19 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It suggests that carbon coating indeed provides more effective transf er of the Li + and electrons, thus improving the electrochemical activity and reaction kinetics. That's one of the key factors to enhance the electrochemical performance of FeS 2 /C nanospheres [37][38][39][40] . (2) The carbon layer can stop the shuttle of polysulfides to achieve better cycles [41][42][43] .…”

Section: Resultsmentioning

confidence: 99%

Design of pyrite/carbon nanospheres as high-capacity cathode for lithium-ion batteries

Xiong

Teng

Lou

et al. 2020

Journal of Energy Chemistry

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Design of pyrite/carbon nanospheres as high-capacity cathode for lithium-ion batteries

Xiong

Teng

Lou

et al. 2020

Journal of Energy Chemistry

View full text Add to dashboard Cite

“…Therefore, wide ranges of temperature (varying between 0°C and 37°C) and SOC (varying between 0 and 1) were used to make sure that the heat generation model based on the resistance could be suitable for the cell's normal working conditions. The measurement of R o and R p is based on the HPPC, and the detailed process is shown in Figure and described in Xie et al For a certain SOC and cell temperature, three terminal voltages are recorded in the impulsive discharge phase. They are located at the beginning of the impulsive discharge phase ( U k1 ), after the sudden drop of the terminal voltage ( U k2 ) and at the end of this phase ( U k3 ), respectively.…”

Section: The Electrothermal Model Of the Packmentioning

confidence: 99%

An improved electrothermal‐coupled model for the temperature estimation of an air‐cooled battery pack

Xie

Zheng

et al. 2019

Int J Energy Res

View full text Add to dashboard Cite

Summary This work establishes an improved electrothermal‐coupled model for the estimation of the temperature evolution in an air‐cooled pack with three parallel branches and four serial cells in each branch. This model includes the influences of the cells' state of charge (SOC) and temperature on the ohmic and polarization resistances and polarization capacitance. The current distribution in the pack is considered in the model and applied to predicting the inconsistent effect of cell temperature. Moreover, the pipe network theory is used to model the airflow in the pack and the heat convection between the air and the batteries. An experiment is implemented to verify prediction precision in the electrical and thermal parameters of the pack. The results show that the electrothermal model accurately estimates the electrical and thermal performance of the air‐cooled pack. The relative error of the pack terminal voltage between the prediction and the experiment is 3.22% under the conditions of a discharging rate is 1.5 C (C denotes the ratio of charging/discharging current to battery capacity), environment temperature of 37°C, and air inlet velocity of 6 m/s. Regarding the prediction error in the temperature, the root mean square errors of most batteries are no more than 0.6°C under the conditions of discharge rates of 1 C and 1.5 C and ambient temperatures of 17°C, 27°C, and 37°C.

show abstract

“…Mei et al 10 found higher heat generation during charge cycle than discharge cycle for low C‐rate. Reversible and irreversible heat was investigated by Bai et al 11 based on the energy balance equations defined first by Bernardi et al, 12 10% of the total heat was found as the amount of reversible heat. Higher heat generation was measured during discharge process comparing to the charging process.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the impact of the battery charging/discharging current ratio on the operating temperature and heat generation

et al. 2021

View full text Add to dashboard Cite

Summary This paper presents an experimental investigation on the Li‐ion battery operating temperature and surface heat generation. Measurements are carried on the experimental laboratory test bench using a 60 Ah prismatic li‐ion battery. A large data base of the battery local heat flux and temperature distributions in the three battery sides is obtained under various operating conditions. It shows that the reversible heat generation affects strongly the temperature profile in quasi‐stationary regime. Moreover, the irreversible heat generation has a strong peak in SOCs values higher than 80%. A difference of 3°C was obtained between maximum battery shell temperature and minimum battery surface temperature. The electrodes temperature could be considered the maximum battery temperature and a main key in analyzing battery thermal behavior. For SOC ranging from 0% to 40%, the battery temperature decreases during charging phase and increases during discharging. For SOC ranging from 40% to 100%, it becomes constant during both the charging/discharging phases for the charge/discharge current ratio higher than 1.

show abstract

Reversible and irreversible heat generation of NCA/Si–C pouch cell during electrochemical energy-storage process

Cited by 60 publications

References 36 publications

Design of pyrite/carbon nanospheres as high-capacity cathode for lithium-ion batteries

Design of pyrite/carbon nanospheres as high-capacity cathode for lithium-ion batteries

An improved electrothermal‐coupled model for the temperature estimation of an air‐cooled battery pack

Experimental investigation on the impact of the battery charging/discharging current ratio on the operating temperature and heat generation

Contact Info

Product

Resources

About