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Thermal characterization of lithium-ion batteries is essential to improve an efficient thermal management system for lithium-ion batteries. Besides, it is needed for safe and optimum application. The investigated lithium-ion battery in the present research is a commercially available lithium titanate oxide-based lithium-ion battery, which can be used in different applications. Different experimental facilities were used to measure lithium-ion battery heat generation at different operating conditions and charge and discharge rates in this investigation. Isothermal battery calorimeter is the exclusive calorimeter globally, suitable for lithium-ion batteries’ accurate thermal measurements. Pulse charge and discharge in different increments of state of charge were applied to the lithium titanate oxide-based lithium-ion battery to designate the heat generation of the lithium-ion battery cell. Three different cases were studied. The precise effects of different state-of-charge levels and current-rates on lithium-ion battery total generated heat was investigated. The maximum heat generation during 13 A, 40 A, 50 A, 60 A and 100 A pulse discharges were 0.231 Wh, 0.77 Wh, 0.507 Wh, 0.590 Wh and 1.13 Wh correspondingly. It could be inferred that in the case of periodic charge and discharge pulses applied to the lithium titanate oxide-based lithium-ion battery, important parameters including state of charge, current rates, initial cycling, and temperature have a significant influence on total generated heat.
Seyed Madani; Erik Schaltz; Søren Kær. Thermal Characterizations of a Lithium Titanate Oxide-Based Lithium-Ion Battery Focused on Random and Periodic Charge-Discharge Pulses. Applied System Innovation 2021, 4, 24 .
AMA StyleSeyed Madani, Erik Schaltz, Søren Kær. Thermal Characterizations of a Lithium Titanate Oxide-Based Lithium-Ion Battery Focused on Random and Periodic Charge-Discharge Pulses. Applied System Innovation. 2021; 4 (2):24.
Chicago/Turabian StyleSeyed Madani; Erik Schaltz; Søren Kær. 2021. "Thermal Characterizations of a Lithium Titanate Oxide-Based Lithium-Ion Battery Focused on Random and Periodic Charge-Discharge Pulses." Applied System Innovation 4, no. 2: 24.
Lithium-ion batteries are being implemented in different large-scale applications, including aerospace and electric vehicles. For these utilizations, it is essential to improve battery cells with a great life cycle because a battery substitute is costly. For their implementation in real applications, lithium-ion battery cells undergo extension during the course of discharging and charging. To avoid disconnection among battery pack ingredients and deformity during cycling, compacting force is exerted to battery packs in electric vehicles. This research used a mechanical design feature that can address these issues. This investigation exhibits a comprehensive description of the experimental setup that can be used for battery testing under pressure to consider lithium-ion batteries’ safety, which could be employed in electrified transportation. Besides, this investigation strives to demonstrate how exterior force affects a lithium-ion battery cell’s performance and behavior corresponding to static exterior force by monitoring the applied pressure at the dissimilar state of charge. Electrochemical impedance spectroscopy was used as the primary technique for this research. It was concluded that the profiles of the achieved spectrums from the experiments seem entirely dissimilar in comparison with the cases without external pressure. By employing electrochemical impedance spectroscopy, it was noticed that the pure ohmic resistance, which is related to ion transport resistance of the separator, could substantially result in the corresponding resistance increase.
Seyed Madani; Erik Schaltz; Søren Kær. Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application. Machines 2021, 9, 71 .
AMA StyleSeyed Madani, Erik Schaltz, Søren Kær. Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application. Machines. 2021; 9 (4):71.
Chicago/Turabian StyleSeyed Madani; Erik Schaltz; Søren Kær. 2021. "Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application." Machines 9, no. 4: 71.
This investigation’s primary purpose was to illustrate the cooling mechanism within a lithium titanate oxide lithium-ion battery pack through the experimental measurement of heat generation inside lithium titanate oxide batteries. Dielectric water/glycol (50/50), air and dielectric mineral oil were selected for the lithium titanate oxide battery pack’s cooling purpose. Different flow configurations were considered to study their thermal effects. Within the lithium-ion battery cells in the lithium titanate oxide battery pack, a time-dependent amount of heat generation, which operated as a volumetric heat source, was employed. It was assumed that the lithium-ion batteries within the battery pack had identical initial temperature conditions in all of the simulations. The lithium-ion battery pack was simulated by ANSYS to determine the temperature gradient of the cooling system and lithium-ion batteries. Simulation outcomes demonstrated that the lithium-ion battery pack’s temperature distributions could be remarkably influenced by the flow arrangement and fluid coolant type.
Seyed Madani; Erik Schaltz; Søren Kær. Applying Different Configurations for the Thermal Management of a Lithium Titanate Oxide Battery Pack. Electrochem 2021, 2, 50 -63.
AMA StyleSeyed Madani, Erik Schaltz, Søren Kær. Applying Different Configurations for the Thermal Management of a Lithium Titanate Oxide Battery Pack. Electrochem. 2021; 2 (1):50-63.
Chicago/Turabian StyleSeyed Madani; Erik Schaltz; Søren Kær. 2021. "Applying Different Configurations for the Thermal Management of a Lithium Titanate Oxide Battery Pack." Electrochem 2, no. 1: 50-63.
A new heat transfer enhancement approach was proposed for the cooling system of lithium-ion batteries. A three-dimensional numerical simulation of the passive thermal management system for a battery pack was accomplished by employing ANSYS Fluent (Canonsburg, PA, USA). Phase change material was used for the thermal management of lithium-ion battery modules and as the heat transmission source to decrease battery temperature in fast charging and discharge conditions. Constant current charge and discharge were applied to lithium-ion battery modules. In the experimental part of the research, an isothermal battery calorimeter was used to determine the heat dissipation of lithium-ion batteries. Thermal performance was simulated for the presence of phase change material composites. Simulation outcomes demonstrate that phase change material cooling considerably decreases the lithium-ion battery temperature increase during fast charging and discharging conditions use. The greatest temperature at the end of 9 C, 7 C, 5 C, and 3 C charges and discharges were approximately 49.7, 44.6, 38.4, and 33.1 °C, respectively, demonstrating satisfactory performance in lithium-ion battery thermal homogeneity of the passive thermal management system.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Thermal Simulation of Phase Change Material for Cooling of a Lithium-Ion Battery Pack. Electrochem 2020, 1, 439 -449.
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Thermal Simulation of Phase Change Material for Cooling of a Lithium-Ion Battery Pack. Electrochem. 2020; 1 (4):439-449.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2020. "Thermal Simulation of Phase Change Material for Cooling of a Lithium-Ion Battery Pack." Electrochem 1, no. 4: 439-449.
Seyed Saeed Madani. Numerical Simulation of an Air Cooling System for Lithium-Ion Batteries. ECS Transactions 2020, 99, 357 -364.
AMA StyleSeyed Saeed Madani. Numerical Simulation of an Air Cooling System for Lithium-Ion Batteries. ECS Transactions. 2020; 99 (1):357-364.
Chicago/Turabian StyleSeyed Saeed Madani. 2020. "Numerical Simulation of an Air Cooling System for Lithium-Ion Batteries." ECS Transactions 99, no. 1: 357-364.
Seyed Saeed Madani. Analysis of a Phase Change Material for Thermal Management of a Lithium-Ion Battery. ECS Transactions 2020, 99, 411 -418.
AMA StyleSeyed Saeed Madani. Analysis of a Phase Change Material for Thermal Management of a Lithium-Ion Battery. ECS Transactions. 2020; 99 (1):411-418.
Chicago/Turabian StyleSeyed Saeed Madani. 2020. "Analysis of a Phase Change Material for Thermal Management of a Lithium-Ion Battery." ECS Transactions 99, no. 1: 411-418.
Seyed Saeed Madani. Experimental Study of the Heat Generation of a Lithium-Ion Battery. ECS Transactions 2020, 99, 419 -428.
AMA StyleSeyed Saeed Madani. Experimental Study of the Heat Generation of a Lithium-Ion Battery. ECS Transactions. 2020; 99 (1):419-428.
Chicago/Turabian StyleSeyed Saeed Madani. 2020. "Experimental Study of the Heat Generation of a Lithium-Ion Battery." ECS Transactions 99, no. 1: 419-428.
Seyed Saeed Madani. Characterization Investigation of Lithium-Ion Battery Cells. ECS Transactions 2020, 99, 65 -73.
AMA StyleSeyed Saeed Madani. Characterization Investigation of Lithium-Ion Battery Cells. ECS Transactions. 2020; 99 (1):65-73.
Chicago/Turabian StyleSeyed Saeed Madani. 2020. "Characterization Investigation of Lithium-Ion Battery Cells." ECS Transactions 99, no. 1: 65-73.
Lithium-ion batteries are extensively used for electric vehicles, owing to their great power and energy density. A battery thermal management system is essential for lithium-ion batteries. With the extensive utilization of liquid-cooling approaches for lithium-ion batteries’ thermal management, temperature homogeneity is considerably influenced by coolant distribution. A lower temperature of the cooling fluid brings about a lower temperature of the cell, but the relation and the amount are important to be analyzed. The cooling efficiency is considerably influenced by the flowing conduit arrangement in the cooling plate. Different parameters are affected by the cooling performance of the battery pack. Consequently, the effect of entrance temperature of coolant fluid, current rate, environment temperature, entrance velocity of the coolant fluid, and plate material on the performance and efficiency of a battery thermal management system were investigated. In this investigation, the program ANSYS/FLUENT was employed as the numerical solver to solve the problem. The simulation was accomplished after the end of the discharge. It was seen that the temperature distributions were the most sensitive to the entrance velocity of coolant fluid. It was concluded that the entrance velocity of coolant fluid has the greatest impact on the cooling efficiency and performance of the cold plate.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Design and Simulation of Internal Flowing Twisted Conduits for Cooling of Lithium-Ion Batteries through Thermal Characterization. Batteries 2020, 6, 31 .
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Design and Simulation of Internal Flowing Twisted Conduits for Cooling of Lithium-Ion Batteries through Thermal Characterization. Batteries. 2020; 6 (2):31.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2020. "Design and Simulation of Internal Flowing Twisted Conduits for Cooling of Lithium-Ion Batteries through Thermal Characterization." Batteries 6, no. 2: 31.
Thermal analysis and thermal management of lithium-ion batteries for utilization in electric vehicles is vital. In order to investigate the thermal behavior of a lithium-ion battery, a liquid cooling design is demonstrated in this research. The influence of cooling direction and conduit distribution on the thermal performance of the lithium-ion battery is analyzed. The outcomes exhibit that the appropriate flow rate for heat dissipation is dependent on different configurations for cold plate. The acceptable heat dissipation condition could be acquired by adding more cooling conduits. Moreover, it was distinguished that satisfactory cooling direction could efficiently enhance the homogeneity of temperature distribution of the lithium-ion battery.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Thermal Analysis of Cold Plate with Different Configurations for Thermal Management of a Lithium-Ion Battery. Batteries 2020, 6, 17 .
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Thermal Analysis of Cold Plate with Different Configurations for Thermal Management of a Lithium-Ion Battery. Batteries. 2020; 6 (1):17.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2020. "Thermal Analysis of Cold Plate with Different Configurations for Thermal Management of a Lithium-Ion Battery." Batteries 6, no. 1: 17.
The determination of coulombic efficiency of the lithium-ion batteries can contribute to comprehend better their degradation behavior. In this research, the coulombic efficiency and capacity loss of three lithium-ion batteries at different current rates (C) were investigated. Two new battery cells were discharged and charged at 0.4 C and 0.8 C for twenty times to monitor the variations in the aging and coulombic efficiency of the battery cell. In addition, prior cycling was applied to the third battery cell which consist of charging and discharging with 0.2 C, 0.4 C, 0.6 C, and 0.8 C current rates and each of them twenty times. The coulombic efficiency of the new battery cells was compared with the cycled one. The experiments demonstrated that approximately all the charge that was stored in the battery cell was extracted out of the battery cell, even at the bigger charging and discharging currents. The average capacity loss rates for discharge and charge during 0.8 C were approximately 0.44% and 0.45% per cycle, correspondingly.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery. Batteries 2019, 5, 57 .
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery. Batteries. 2019; 5 (3):57.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2019. "Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery." Batteries 5, no. 3: 57.
In order to understand the thermal behaviour of a lithium-ion battery, the heat generation within the cell should be determined. The entropic heat coefficient is necessary to determine for the heat generation calculation. The entropic heat coefficient is one of the most important factors, which affects the magnitude of the reversible heat. The purpose of this research is to analyze and investigate the effect of different parameters on the entropic coefficient of lithium titanate oxide batteries. In this research, a lithium ion pouch cell was examined in both charging and discharging situations. The state of charge levels range was considered from 10% to 90%, and vice versa, in 10% increments. The temperature levels vary from 5 °C to 55 °C and the voltage levels vary from 1.5 V to 2.8 V. The effect of different parameters such as initial temperature, state of charge, thermal cycle, time duration for thermal cycles, and procedure prior to the thermal cycle on the entropic coefficient of lithium titanate oxide batteries were investigated. It was concluded that there is a strong influence of the battery cell state of charge on the entropic heat coefficient compared with other parameters.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery. Energies 2019, 12, 2685 .
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery. Energies. 2019; 12 (14):2685.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2019. "An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery." Energies 12, no. 14: 2685.
A precise lithium-ion battery model is required to specify their appropriateness for different applications and to study their dynamic behavior. In addition, it is important to design an efficient battery system for power applications. In this investigation, a second-order equivalent electrical circuit battery model, which is the most conventional method of characterizing the behavior of a lithium-ion battery, was developed. The current pulse procedure was employed for parameterization of the model. The construction of the model was described in detail, and a battery model for a 13 Ah lithium titanate oxide battery cell was demonstrated. Comprehensive characterization experiments were accomplished for an extensive range of operating situations. The outcomes were employed to parameterize the suggested dynamic model of the lithium titanate oxide battery cell. The simulation outcomes were compared to the laboratory measurements. In addition, the proposed lithium-ion battery model was validated. The recommended model was assessed, and the proposed model was able to anticipate precisely the current and voltage performance.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. An Electrical Equivalent Circuit Model of a Lithium Titanate Oxide Battery. Batteries 2019, 5, 31 .
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. An Electrical Equivalent Circuit Model of a Lithium Titanate Oxide Battery. Batteries. 2019; 5 (1):31.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2019. "An Electrical Equivalent Circuit Model of a Lithium Titanate Oxide Battery." Batteries 5, no. 1: 31.
One of the reasonable possibilities to investigate the battery behaviour under various temperature and current conditions is the development of a model of the lithium-ion batteries and then by employing the simulation technique to anticipate their behaviour. This method not only can save time but also they can predict the behaviour of the batteries through simulation. In this investigation, a three-dimensional model is developed to simulate thermal and electrochemical behaviour of a 13Ah lithium-ion battery. In addition, the temperature dependency of the battery cell parameters was considered in the model in order to investigate the influence of temperature on various parameters such as heat generation during battery cell operation. Maccor automated test system and isothermal battery calorimeter were used as experimental setup to validate the thermal model, which was able to predict the heat generation rate and temperature at different positions of the battery. The three-dimensional temperature distributions which were achieved from the modelling and experiment were in well agreement with each other throughout the entire of discharge cycling at different environmental temperatures and discharge rates.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Simulation of Thermal Behaviour of a Lithium Titanate Oxide Battery. Energies 2019, 12, 679 .
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Simulation of Thermal Behaviour of a Lithium Titanate Oxide Battery. Energies. 2019; 12 (4):679.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2019. "Simulation of Thermal Behaviour of a Lithium Titanate Oxide Battery." Energies 12, no. 4: 679.
The temperature distribution of lithium-ion batteries in the electric vehicle is very important for the electric vehicle performance. Heat is produced during lithium-ion batteries operation while being charged and discharged. The battery can in worst case go into thermal runaway if the heat cannot be dissipated rapidly. This experimental investigation analysis the thermal behaviour of a 13Ah pouch type lithium-ion battery through characterisation and determination of the evolution of surface temperature distribution and profiles when there is a bad connection in the positive tab. Infrared thermography and contact thermocouples were employed for a commercial cell thermal analysis. Different types of load profiles were applied to the battery cell. The loads consisted of constant current charge and discharge cycles with currents magnitude of 13A, 26A, 39A and 52A.It was concluded that bad connection increased the non-uniformity of surface temperature and risk of thermal runaway in lithium-ion batteries.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Effect of Bad Connection on Surface Temperature of Lithium-Ion Batteries by Using Infrared Thermography. ECS Transactions 2018, 87, 39 -50.
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Effect of Bad Connection on Surface Temperature of Lithium-Ion Batteries by Using Infrared Thermography. ECS Transactions. 2018; 87 (1):39-50.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2018. "Effect of Bad Connection on Surface Temperature of Lithium-Ion Batteries by Using Infrared Thermography." ECS Transactions 87, no. 1: 39-50.
Lithium-ion batteries have many advantages in compare to other conventional batteries. Because of that, they have many applications in different sectors such as portable electronic devices, electric vehicles and other fields. To assure that the operation and performance of lithium-ion batteries are reliable, safe and economic, the approximation of state of charge, cycle life and other parameters for lithium-ion batteries are necessary. Equivalent circuit models are an important tool in the field of research in lithium-ion batteries. Several researcher have suggested a variety of equivalent circuit models. Some of these models are simple whereas some others are complicated. This paper presents a review of different equivalent circuit models and parameters identification methods in lithium-ion batteries for energy storage applications. These models include the internal resistance model, one time constant model, two time constants model, Thévenin model, PNGV (partnership for a new generation of vehicles) model, DP (dual polarization) model, improved PNGV model, tree seeds algorithm, electrochemical impedance spectroscopy method, and Randles’ model.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. A Review of Different Electric Equivalent Circuit Models and Parameter Identification Methods of Lithium-Ion Batteries. ECS Transactions 2018, 87, 23 -37.
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. A Review of Different Electric Equivalent Circuit Models and Parameter Identification Methods of Lithium-Ion Batteries. ECS Transactions. 2018; 87 (1):23-37.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2018. "A Review of Different Electric Equivalent Circuit Models and Parameter Identification Methods of Lithium-Ion Batteries." ECS Transactions 87, no. 1: 23-37.
To comprehend the thermal behaviour, performance and the dependency of the affecting parameters such as state-of-charge and C-rates on the heat loss, efficiency, heat flux and maximum temperature of a commercial pouch type lithium-ion battery under various working conditions, different loading were applied to the battery. The capacity of the battery is 13Ah, which has a lithium titanate oxide based anode from Altairnano. Surface temperatures and heat flux of the Lithium-ion battery cell were measured by means of isothermal battery calorimeter. Different charge and discharge current pulses with different C-rates at ten state of charge (SOC) levels from 10% to 90% SOC were applied to the battery by using Maccor automated test system. It was concluded that heat losses demonstrated approximately decreasing pattern from 10 % SOC to 90% SOC.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Investigation of the Effect of State-of-Charge and C-Rates on the Heat Loss and Efficiency of a Lithium-Ion Battery. ECS Transactions 2018, 87, 51 -58.
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Investigation of the Effect of State-of-Charge and C-Rates on the Heat Loss and Efficiency of a Lithium-Ion Battery. ECS Transactions. 2018; 87 (1):51-58.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2018. "Investigation of the Effect of State-of-Charge and C-Rates on the Heat Loss and Efficiency of a Lithium-Ion Battery." ECS Transactions 87, no. 1: 51-58.
Present research explores the impact of operation temperature of a 13 Ah Lithium Titanate Oxid (LTO) battery cell on its thermal behaviour, heat generation, efficiency and maximum temperature. To accomplish this, different loading patterns were applied to the battery. The experiments were accomplished at several charge and discharge cycles with different C-rates. Temperature is one of the most important parameters, which have considerable impacts on the capacity, cycle lifetime, safety and heat generation of lithium-ion batteries. Notwithstanding, the comprehensive and detail effects of temperature on the heat generation of lithium-ion batteries is necessary to be found. The findings allow us to have a better understanding of the effect of temperature on different aspect of the battery ell. The results will assists on a precise thermal model of the battery. In addition it can improve the thermal management systems.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Study of Temperature Impacts on a Lithium-Ion Battery Thermal Behaviour by Employing Isothermal Calorimeter. ECS Transactions 2018, 87, 295 -305.
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Study of Temperature Impacts on a Lithium-Ion Battery Thermal Behaviour by Employing Isothermal Calorimeter. ECS Transactions. 2018; 87 (1):295-305.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2018. "Study of Temperature Impacts on a Lithium-Ion Battery Thermal Behaviour by Employing Isothermal Calorimeter." ECS Transactions 87, no. 1: 295-305.
The main objective of the paper is to develop a thermal model for anticipating the heat loss behaviour of lithium titanate oxid batteries. Heat loss from experimental measurements was compared to heat loss which was determined from the modelling. The heat loss was quantified through reversible and irreversible heat sources in a 13 Ah pouch type commercial lithium titanate oxid battery. Experimental heat loss was measured by using isothermal battery calorimeter. The heat generation of the lithium-ion battery during functioning was estimated by the aggregate of two fundamental sources, which are the irreversible and reversible heat. The reversible heat generation rate was determined from the entropy variation. The irreversible heat is a complicated parameters to be determined and is characterized in dissimilar procedures in various heat analysing models. In this paper the irreversible heat was determined through internal resistance and current rate.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Thermal Modelling of a Lithium Titanate Oxide Battery. ECS Transactions 2018, 87, 315 -326.
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Thermal Modelling of a Lithium Titanate Oxide Battery. ECS Transactions. 2018; 87 (1):315-326.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2018. "Thermal Modelling of a Lithium Titanate Oxide Battery." ECS Transactions 87, no. 1: 315-326.
To understand better the thermal behaviour of lithium-ion batteries under different working conditions, various experiments were applied to a 13 Ah Altairnano lithium titanate oxide battery cell by means of isothermal battery calorimeter. Several parameters were measured such as the battery surface temperature, voltage, current, power, heat flux, maximum temperature and power area. In addition, the efficiency was calculated. Isothermal battery calorimeter was selected as the most appropriate method for heat loss measurements. Temperatures on the surface of the battery were measured by employing four contact thermocouples (type K). In order to determine the heat loss of the battery, constant current charge and discharge pulses at sixteen different C-rates were applied to the battery. It was seen that the charge and discharge C-rates has a considerable influence on the thermal behaviours of lithium-ion batteries. In this research paper, the C-rate was linked to the peak temperature, efficiency and heat loss and it was concluded that they are linear dependent on the C-rate. In addition, the outcomes of this investigation can be used for battery thermal modelling and design of thermal management systems.
Seyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. Heat Loss Measurement of Lithium Titanate Oxide Batteries under Fast Charging Conditions by Employing Isothermal Calorimeter. Batteries 2018, 4, 59 .
AMA StyleSeyed Saeed Madani, Erik Schaltz, Søren Knudsen Kær. Heat Loss Measurement of Lithium Titanate Oxide Batteries under Fast Charging Conditions by Employing Isothermal Calorimeter. Batteries. 2018; 4 (4):59.
Chicago/Turabian StyleSeyed Saeed Madani; Erik Schaltz; Søren Knudsen Kær. 2018. "Heat Loss Measurement of Lithium Titanate Oxide Batteries under Fast Charging Conditions by Employing Isothermal Calorimeter." Batteries 4, no. 4: 59.