Research on lithium ion battery applications in vehicles

Much attention has been paid on batteries recent years because of their wide application in portable electronic devices as well as vehicles, ships and aircrafts. Among all kinds of batteries, lithium-ion battery (LIB) plays an essential role in marketplace due to their high capacity, high efficiency...

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Main Author: Huang, Ke
Other Authors: Zhao Jiyun
Format: Final Year Project
Language:English
Published: 2014
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Online Access:http://hdl.handle.net/10356/60512
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-605122023-07-07T16:14:40Z Research on lithium ion battery applications in vehicles Huang, Ke Zhao Jiyun School of Electrical and Electronic Engineering DRNTU::Engineering Much attention has been paid on batteries recent years because of their wide application in portable electronic devices as well as vehicles, ships and aircrafts. Among all kinds of batteries, lithium-ion battery (LIB) plays an essential role in marketplace due to their high capacity, high efficiency, long life and low self-discharge rate,which make LIB become the perfect power supply of the electric vehicle. However, LIB has problems of poor safety characteristics caused by high heat generation and the temperature rise during charge and discharge. The high temperature affects the performance, reliability and lifespan of the battery and may cause serious safety hazards such as thermal runaway, even ignition. The safety problem and poor working properties at high temperature makes thermal behavior of LIB one of the most important issues in studying an improving the properties of it. If we want to make it possible for electric vehicle, these problems of LIB must be solved. In this report, the LIB temperature prediction model is proposed. The one-dimensional thermal/electrochemical model is based on the mathematical calculation. This model is integrated with actions of electrode reaction, joule heating, heat conduction and heat convection is developed to predicted the internal temperature of a battery cell in real time by relying on only the non-intrusive measurements of cell surface temperature and electrical quantities. The modeling approach started from the microscopic electrochemical reaction in the battery interior and ended up with the macro distribution of temperature throughout the cell, with the potential of application in BMS. And an intelligent battery cooling system is designed to improve the safety characteristic of battery/battery pack. This can help LIB maintain good working performance in electric vehicle. There are mainly four parts included in the intelligent battery cooling system, battery pack, temperature measurement circuit, DC-DC boost converter and a cooling device. When the temperature of battery pack rise to warning level, the output voltage of temperature measurement circuit will rise to a critical value under the amplification of boost converter, it can drive the cooling device (electric fan, etc.) and cool down the battery pack. DC-DC converter plays an important role in several parts of BMS. Conclusions are given at the end of this report and a discussion on future works is also presented. The proposed future work includes the optimization and combination of single cell temperature model, study on temperature prediction of battery pack, the research about mutual temperature effect of cells and the setting up of intelligent battery cooling system. Bachelor of Engineering 2014-05-27T09:25:11Z 2014-05-27T09:25:11Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/60512 en Nanyang Technological University 52 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Huang, Ke
Research on lithium ion battery applications in vehicles
description Much attention has been paid on batteries recent years because of their wide application in portable electronic devices as well as vehicles, ships and aircrafts. Among all kinds of batteries, lithium-ion battery (LIB) plays an essential role in marketplace due to their high capacity, high efficiency, long life and low self-discharge rate,which make LIB become the perfect power supply of the electric vehicle. However, LIB has problems of poor safety characteristics caused by high heat generation and the temperature rise during charge and discharge. The high temperature affects the performance, reliability and lifespan of the battery and may cause serious safety hazards such as thermal runaway, even ignition. The safety problem and poor working properties at high temperature makes thermal behavior of LIB one of the most important issues in studying an improving the properties of it. If we want to make it possible for electric vehicle, these problems of LIB must be solved. In this report, the LIB temperature prediction model is proposed. The one-dimensional thermal/electrochemical model is based on the mathematical calculation. This model is integrated with actions of electrode reaction, joule heating, heat conduction and heat convection is developed to predicted the internal temperature of a battery cell in real time by relying on only the non-intrusive measurements of cell surface temperature and electrical quantities. The modeling approach started from the microscopic electrochemical reaction in the battery interior and ended up with the macro distribution of temperature throughout the cell, with the potential of application in BMS. And an intelligent battery cooling system is designed to improve the safety characteristic of battery/battery pack. This can help LIB maintain good working performance in electric vehicle. There are mainly four parts included in the intelligent battery cooling system, battery pack, temperature measurement circuit, DC-DC boost converter and a cooling device. When the temperature of battery pack rise to warning level, the output voltage of temperature measurement circuit will rise to a critical value under the amplification of boost converter, it can drive the cooling device (electric fan, etc.) and cool down the battery pack. DC-DC converter plays an important role in several parts of BMS. Conclusions are given at the end of this report and a discussion on future works is also presented. The proposed future work includes the optimization and combination of single cell temperature model, study on temperature prediction of battery pack, the research about mutual temperature effect of cells and the setting up of intelligent battery cooling system.
author2 Zhao Jiyun
author_facet Zhao Jiyun
Huang, Ke
format Final Year Project
author Huang, Ke
author_sort Huang, Ke
title Research on lithium ion battery applications in vehicles
title_short Research on lithium ion battery applications in vehicles
title_full Research on lithium ion battery applications in vehicles
title_fullStr Research on lithium ion battery applications in vehicles
title_full_unstemmed Research on lithium ion battery applications in vehicles
title_sort research on lithium ion battery applications in vehicles
publishDate 2014
url http://hdl.handle.net/10356/60512
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