TY - JOUR
T1 - A reliability study of electric vehicle battery from the perspective of power supply system
AU - Shu, Xiong
AU - Yang, Wenxian
AU - Guo, Yingfu
AU - Wei, Kexiang
AU - Qin, Bo
AU - Zhu, Guanghui
N1 - Funding Information:
The authors gratefully acknowledge the support from the National Natural Science Foundation of China (Grant No. 11772126 ), the Hunan Province Science and Technology Innovation Program (Grant Nos. 2017XK2303 and 2019JJ50099 ), the Research Foundation of Education Department of Hunan Province , China (Grant No. 19A115 ). This study was also funded by the National Study Abroad Fund.
Funding Information:
The authors gratefully acknowledge the support from the National Natural Science Foundation of China (Grant No. 11772126), the Hunan Province Science and Technology Innovation Program (Grant Nos. 2017XK2303 and 2019JJ50099), the Research Foundation of Education Department of Hunan Province, China (Grant No. 19A115). This study was also funded by the National Study Abroad Fund.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - Battery cells and modules are critical to the reliability of the power supply system of an EV. Therefore, their reliability is mainly concern before. However, EV's power supply system is a complex system. Besides battery cells and modules, it also includes many other components, the failure of which can cause a breakdown of the system as well. So, the reliability of the battery should be evaluated from the perspective of the entire power supply system rather than only considering the reliability of the battery cells and modules. This motivates the research of this paper. In the present study, the failure rates of all major components are predicted first. Then, based on the prediction results, the reliability of the entire battery system is assessed. From the assessment results, it is found that the reliability of the entire battery system is indeed much lower than those of individual components including battery modules. Moreover, as compared to the degradation of individual components, the entire system degrades more rapidly over time. Additionally, it is interestingly found that the Battery Management System (BMS) controller is not as reliable as the battery modules in the battery system considered in this paper.
AB - Battery cells and modules are critical to the reliability of the power supply system of an EV. Therefore, their reliability is mainly concern before. However, EV's power supply system is a complex system. Besides battery cells and modules, it also includes many other components, the failure of which can cause a breakdown of the system as well. So, the reliability of the battery should be evaluated from the perspective of the entire power supply system rather than only considering the reliability of the battery cells and modules. This motivates the research of this paper. In the present study, the failure rates of all major components are predicted first. Then, based on the prediction results, the reliability of the entire battery system is assessed. From the assessment results, it is found that the reliability of the entire battery system is indeed much lower than those of individual components including battery modules. Moreover, as compared to the degradation of individual components, the entire system degrades more rapidly over time. Additionally, it is interestingly found that the Battery Management System (BMS) controller is not as reliable as the battery modules in the battery system considered in this paper.
KW - Battery system
KW - Electric vehicle
KW - Fault tree analysis
KW - Reliability
UR - http://www.scopus.com/inward/record.url?scp=85078733639&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2020.227805
DO - 10.1016/j.jpowsour.2020.227805
M3 - Article
AN - SCOPUS:85078733639
VL - 451
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
M1 - 227805
ER -
