Multi-Chemistry Battery Management System for Electric Vehicles
Main Article Content
Abstract
Electric vehicle technology is increasing its market share through its sound development. Battery
management systems (BMS) also play an essential role in this technology regarding efficiency, safety, and
meeting the end user’s expectations. In this study, a simulation study of a multi-chemistry BMS capable
of real-time switching has been carried out so that the system can operate more efficiently. The proposed
system aims to increase efficiency and performance using two batteries with different characteristics. The
primary battery chemistry used is lithium titanate oxide (LTO) batteries, which can provide higher
instantaneous power in times of high power demand. The second battery chemistry is lithium iron
phosphate (LFP) batteries, which have higher endurance due to their high energy density. Each battery has
six modules and provides a total voltage of 450 volts. The WLTP Class 3 driving cycle was used as the
vehicle’s speed reference in the simulation, considering its power/weight ratio. The battery control signal
required for switching between batteries is produced according to the instantaneous power requirement of
the vehicle. For this, the acceleration value is calculated, and the transition from one battery to the other is
determined accordingly. If the acceleration is above the threshold value of 0.75, the LTO battery is
connected. In the other case, the LFP battery is connected. Contactors are used to provide switching between
batteries but not IGBTs. Consequently, contactors can be used as switching elements with a transition
window of 3 seconds. This technic is less costly than designing such a system with fast-switching circuit
elements like IGBT. In addition, the multi-battery mechanism consisting of LTO and LFP chemistries
showed better performance than a battery pack with only LFP chemistry with the same specs. In other
words, multi-chemistry BMS provides a significant performance and efficiency increase.
Downloads
Article Details

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
References
Andrea, Davide. 2010. Battery Management Systems for Large Lithium-Ion Battery Packs. Boston: Artech House.
Arai, Hisaharu. 1995. Automobile Engineering Almanac: History of the Development of the Automobile.
Sankaido Press.
Bergveld, H.J., W.S. Kruijt, and P.H.L Notten. 2002. Battery Management Systems. 1st ed. Springer Netherlands. DOI: https://doi.org/10.1007/978-94-017-0843-2_1
Bergveld, Hendrik J., Valer Pop, and Petrus H. L. Notten. 2008. “Method and Apparatus for Determination of the State-of-Charge (Soc) of a Rechargeable Battery.”
Bruen, Thomas et al. 2016. “Analysis of a Battery Management System (BMS) Control Strategy for Vibration Aged Nickel Manganese Cobalt Oxide (NMC) Lithium-Ion 18650 Battery Cells.” ENERGIES 9(4). DOI: https://doi.org/10.3390/en9040255
Buccolini, L et al. 2016. “Battery Management System (BMS) Simulation Environment for Electric Vehicles.” In 2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC), 1–6. DOI: https://doi.org/10.1109/EEEIC.2016.7555475
Cheng, Eric Ka-Wai. 2016. “Review of Battery Management Systems for Electric Vehicles.” In Energy Systems For Electric And Hybrid Vehicles, IET Transportation Series, ed. K T Chau. , 349–71. DOI: https://doi.org/10.1049/PBTR002E_ch12
Dikmen, İsmail Can. 2022. “Design and Implementation of an Intelligent Battery Management System for Electric Vehicles.” Inonu University.
Dikmen, İsmail Can, and Teoman Karadağ. 2022. “Electrical Method for Battery Chemical Composition Determination.” IEEE Access 10: 6496–6504. DOI: https://doi.org/10.1109/ACCESS.2022.3143040
Dunckley, M. 1993. “Electric Vehicles — Are They a Realistic Option for the Future?” Journal of Power Sources 42(1): 291–95. http://www.sciencedirect.com/science/article/pii/037877539380158L. DOI: https://doi.org/10.1016/0378-7753(93)80158-L
Garche, J, and A Jossen. 2000. “Battery Management Systems (BMS) for Increasing Battery Life Time.” In TELESCON 2000. Third International Telecommunications Energy Special Conference (IEEE Cat. No.00EX424), 85–88. DOI: https://doi.org/10.1109/TELESC.2000.918410
Glover, Maurice, and William Kimberley. 1996. “Kind of Hush.” Automotive Engineer (London) 21(6).
Guarnieri, M. 2012. “Looking Back to Electric Cars.” In 2012 Third IEEE HISTory of ELectro-Technology CONference (HISTELCON), 1–6. DOI: https://doi.org/10.1109/HISTELCON.2012.6487583
Guillemin, Amédée, and Silvanus P Thompson. 1891. Electricity and Magnetism,. London; New York: Macmillan and Co.
Heller, Augustus. 1896. “Anianus Jedlik.” Nature 53(1379): 516–17. DOI: https://doi.org/10.1038/053516a0
Johnson, Brian C. 1999. “Environmental Products That Drive Organizational Change: General Motor’s Electric Vehicle (EV1).” Corporate Environmental Strategy 6(2): 140–50. DOI: https://doi.org/10.1016/S1066-7938(00)80024-X
Kruger, R, and J W Barrick. 1966. “Battery Ratings.” SAE Technical Papers. DOI: https://doi.org/10.4271/660029
Morimoto, Masayuki. 2009. Electric Vehicles: Framework for Vehicles Run by Electricity and Motors.
Morikita Press.
Pop, Valer et al. 2008. Battery Management Systems Accurate State-of-Charge Indication for Battery- Powered Applications. Springer Science+Business Media B.V.
Popp, Alexander et al. 2021. “Battery Management Systems Topologies: Applications Implications of Different Voltage Levels.” In 2021 IEEE The 4th International Conference On Power And Energy Applications (ICPEA 2021), , 43–50. DOI: https://doi.org/10.1109/ICPEA52760.2021.9639285
Sandeep Dhameja. 2002. Electric Vehicle Battery Systems. Elsevier. DOI: https://doi.org/10.1016/B978-075069916-7/50007-8
Saslow, Wayne M. 2002. “Chapter 12 - Faraday’s Law of Electromagnetic Induction.” In ed. Wayne M B T DOI: https://doi.org/10.1016/B978-012619455-5.50012-7
- Electricity Saslow Magnetism, and Light. San Diego: Academic Press, 505–58.
Stuart, Thomas et al. 2002. “A Modular Battery Management System for HEVs.” SAE Transactions 111: 777–85. DOI: https://doi.org/10.4271/2002-01-1918
“The History of the University of Groningen.” 2021. The History of the University of Groningen. “Wired Wheels.” 1996. Industry Week 245(20): 50.
Xing, Yinjiao, Eden W M Ma, Kwok L Tsui, and Michael Pecht. 2011. “Battery Management Systems in Electric and Hybrid Vehicles.” Energies 4(11). DOI: https://doi.org/10.3390/en4111840