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Battery Thermal Management for Electric Vehicles Operating in Cold Climates.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Battery Thermal Management for Electric Vehicles Operating in Cold Climates./
作者:	Babu, Anandh Ramesh.
面頁冊數:	1 online resource (57 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-01, Section: B.
Contained By:	Dissertations Abstracts International84-01B.
標題:	Friction. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29177726click for full text (PQDT)
ISBN:	9798835549894

Battery Thermal Management for Electric Vehicles Operating in Cold Climates.
Babu, Anandh Ramesh.

Battery Thermal Management for Electric Vehicles Operating in Cold Climates. - 1 online resource (57 pages)

Source: Dissertations Abstracts International, Volume: 84-01, Section: B.

Thesis (Licentiate)--Chalmers Tekniska Hogskola (Sweden), 2022.

Includes bibliographical references

Electromobility has gained significance over recent years in an attempt to reduce greenhouse gas emissions which contribute to climate change. The requirements on the performance and efficiency of electric vehicles are high to make them an attractive alternative to the conventional fossil-fuel driven vehicles. Lithium-ion batteries are the primary energy source for electric vehicles as they have high power and energy density, excellent storage capabilities and long cycling life when operated under conducive conditions, i.e a temperature range of 15°C to 35°C. However, their performance and cycling life are drastically affected when the operating temperature is outside this range. Therefore, battery packs must be heated to optimal temperatures under cold climates. This energy is often provided by the packs themselves, which results in reduced driving range.This work investigates thermal encapsulation of battery packs as a means of passive battery thermal management to improve the battery performance and decrease heating demand during the initial phase of driving in cold climates. In order to predict the effects of battery pack encapsulation, a robust battery model that captures the dynamic behaviour of large battery packs is necessary in addition to other simplified vehicle and powertrain subsystems. The presented work proposes an integrated simulation methodology that enables numerical simulation of the relevant phenomenon at battery module, powertrain and vehicle levels.The battery modeling strategy uses a one-dimensional module discretized electrical-thermal approach. An electrical circuit model with 2RC Thevenin branches was used to capture the electrical performance and the Bernardi's heat generation equation was used to estimate the heat generated from each module. The developed strategy was found to be in good agreement with measured test data. Vehicle simulations were performed under parking-driving scenarios to investigate the effectiveness of battery pack encapsulation at different ambient temperatures. It was found that the percentage of energy saved with battery pack encapsulation increased with decreasing ambient temperatures. The thermal resistance of the encapsulation material played a significant role in reducing heat loss to the environment. The simulations indicated that there is a potential of approximately 15% energy savings as a result of increased initial battery temperatures.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798835549894Subjects--Topical Terms:

650299
Friction.
Index Terms--Genre/Form:

542853
Electronic books.

Battery Thermal Management for Electric Vehicles Operating in Cold Climates.
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245 1 0 $a Battery Thermal Management for Electric Vehicles Operating in Cold Climates.
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300 $a 1 online resource (57 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 84-01, Section: B.
500 $a Advisor: Minovski, Blago.
502 $a Thesis (Licentiate)--Chalmers Tekniska Hogskola (Sweden), 2022.
504 $a Includes bibliographical references
520 $a Electromobility has gained significance over recent years in an attempt to reduce greenhouse gas emissions which contribute to climate change. The requirements on the performance and efficiency of electric vehicles are high to make them an attractive alternative to the conventional fossil-fuel driven vehicles. Lithium-ion batteries are the primary energy source for electric vehicles as they have high power and energy density, excellent storage capabilities and long cycling life when operated under conducive conditions, i.e a temperature range of 15°C to 35°C. However, their performance and cycling life are drastically affected when the operating temperature is outside this range. Therefore, battery packs must be heated to optimal temperatures under cold climates. This energy is often provided by the packs themselves, which results in reduced driving range.This work investigates thermal encapsulation of battery packs as a means of passive battery thermal management to improve the battery performance and decrease heating demand during the initial phase of driving in cold climates. In order to predict the effects of battery pack encapsulation, a robust battery model that captures the dynamic behaviour of large battery packs is necessary in addition to other simplified vehicle and powertrain subsystems. The presented work proposes an integrated simulation methodology that enables numerical simulation of the relevant phenomenon at battery module, powertrain and vehicle levels.The battery modeling strategy uses a one-dimensional module discretized electrical-thermal approach. An electrical circuit model with 2RC Thevenin branches was used to capture the electrical performance and the Bernardi's heat generation equation was used to estimate the heat generated from each module. The developed strategy was found to be in good agreement with measured test data. Vehicle simulations were performed under parking-driving scenarios to investigate the effectiveness of battery pack encapsulation at different ambient temperatures. It was found that the percentage of energy saved with battery pack encapsulation increased with decreasing ambient temperatures. The thermal resistance of the encapsulation material played a significant role in reducing heat loss to the environment. The simulations indicated that there is a potential of approximately 15% energy savings as a result of increased initial battery temperatures.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Friction. $3 650299
650 4 $a Heat transfer. $3 3391367
650 4 $a Behavior. $3 532476
650 4 $a Cold. $3 560283
650 4 $a Electrolytes. $3 656992
650 4 $a Graphite. $3 651851
650 4 $a Viscosity. $3 1050706
650 4 $a Electrodes. $3 629151
650 4 $a Temperature effects. $3 3560297
650 4 $a Emissions. $3 3559499
650 4 $a Electric vehicles. $3 1613392
650 4 $a Automobiles. $3 560291
650 4 $a Energy storage. $3 652130
650 4 $a Insulation. $3 3683907
650 4 $a Energy consumption. $3 631630
650 4 $a Climate change. $2 bicssc $3 2079509
650 4 $a Lithium. $3 1638490
650 4 $a Interfaces. $2 gtt $3 834756
650 4 $a Energy. $3 876794
650 4 $a Thermodynamics. $3 517304
650 4 $a Transportation. $3 555912
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0404
690 $a 0791
690 $a 0348
690 $a 0709
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a Chalmers Tekniska Hogskola (Sweden). $3 1913472
773 0 $t Dissertations Abstracts International $g 84-01B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29177726 $z click for full text (PQDT)