Simplified Heat Generation Model for Lithium ion battery used in Electric Vehicle

Ismail, Nur Hazima Faezaa; Toha, Siti Fauziah; Azubir, N.A.M.; Ishak, Nizam Hanis Md; Hassan, Mohd Khair; Ibrahim, Badaruddin

doi:10.1088/1757-899x/53/1/012014

Cited by 42 publications

(13 citation statements)

References 8 publications

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“…The overcharging current applied to the LIC is mainly responsible for the initial heat generation and not necessarily chemical reactions until the cell reaches a critical point beyond the cell range of operation. [43]. Figure 5 shows a heat generated over time estimated on experimental data and Equation (9) with constant current and varying overcharge voltage during the overcharge process with 1.6 J/s heat generated.…”

Section: Resultsmentioning

confidence: 99%

“…The instantaneous voltage-drop during internal short circuit is due to loss of potential difference when the anode and cathode at different potentials are connected due to conductive stainless-steel nail material, resulting in large current flow. The start of nail penetration as illustrated in Figure 6, shows the trigger point for the instantaneous voltage drop (large current flow) followed by rise in temperature, which initiates the decomposition of the electrolyte [43], which are exothermic reactions. This generates more heat, which in turn triggers a thermal runaway, generating gaseous products.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 4 shows the overcharged test result with a cell surface temperature plateau at 37 °C and a minimal weight loss observed because of minor venting of the electrolyte. The overcharge test led to swelling, gassing and temperature rise due to the exothermic reaction between the electrodes and electrolyte decomposition [43]. During cell overcharging, the lithium ions remaining in the cathode are removed and more lithium ions are intercalated in the anode.…”

Section: Electrochemical-thermal Reaction Mechanisms Governing Equationmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical-thermal Reaction Mechanisms Governing Equationmentioning

confidence: 99%

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Lithium-Ion Capacitor Safety Testing for Commercial Application

2019

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“…Some research work have adopted the lumped capacitance approach given that it is favourable in instances when fairly accurate data is required concurrently with computational efficiency [50,51]. For thermal modelling of LA batteries there are various MATLAB based battery thermal models available in the National Renewable Energy Laboratory's (NREL) Advanced Vehicle Simulator (ADVISOR) plug-in [3].…”

Section: Lumped Capacitance Thermal Modelsmentioning

confidence: 99%

Theoretical Modelling Methods for Thermal Management of Batteries

Shabani¹,

Biju²

2015

Energies

103

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Abstract:The main challenge associated with renewable energy generation is the intermittency of the renewable source of power. Because of this, back-up generation sources fuelled by fossil fuels are required. In stationary applications whether it is a back-up diesel generator or connection to the grid, these systems are yet to be truly emissions-free. One solution to the problem is the utilisation of electrochemical energy storage systems (ESS) to store the excess renewable energy and then reusing this energy when the renewable energy source is insufficient to meet the demand. The performance of an ESS amongst other things is affected by the design, materials used and the operating temperature of the system. The operating temperature is critical since operating an ESS at low ambient temperatures affects its capacity and charge acceptance while operating the ESS at high ambient temperatures affects its lifetime and suggests safety risks. Safety risks are magnified in renewable energy storage applications given the scale of the ESS required to meet the energy demand. This necessity has propelled significant effort to model the thermal behaviour of ESS. Understanding and modelling the thermal behaviour of these systems is a crucial consideration before designing an efficient thermal management system that would operate safely and extend the lifetime of the ESS. This is vital in order to eliminate intermittency and add value to renewable sources of power. This paper concentrates on reviewing theoretical approaches used to simulate the operating temperatures of ESS and the subsequent endeavours of modelling thermal management systems for these systems. The intent of this review is to present some of the different methods of modelling the thermal behaviour of ESS highlighting the advantages and disadvantages of each approach. OPEN ACCESSEnergies 2015, 8 10154

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“…A significant contributor to air pollution and greenhouse gases is the emission from the automobiles [4]. One of the more efficient solution for the problem of air pollution and fossil fuel consumption caused by conventional IC engines is the usage of battery operated vehicles [5], [6]. In the battery operated vehicles lithium ion batteries are the prevalent choice for energy storage [7], due to high energy density, high specific energy, high voltage, long life and low self-discharge [5], [8].…”

Section: Introductionmentioning

confidence: 99%