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Hybrid BTMS for Lithium-Ion Batteries

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Academic year: 2021

Partager "Hybrid BTMS for Lithium-Ion Batteries"

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(1)+\EULG%706IRU/LWKLXP,RQ%DWWHULHV &KDNLE$ODRXL*0KDPHG=LQHGGLQH ,16$(XUR0pGLWHUUDQpH (XURPHG8QLYHUVLW\ )qV0RURFFR FDODRXL#LQVDXHXURPHGRUJ P]LQHGGLQH#LQVDXHXURPHGRUJ Abstract± Lithium-ion (li-ion) batteries are considered as the best choice available for energy storage system (EES) for portable devices, electric and hybrid vehicles and smart grid, thanks to their high energy and power densities, lack of memory effect and life cycle. However, the heat generated by these batteries remains a challenge. Without an appropriate battery thermal management system (BTMS), the li-ion battery surface temperature can increase very quickly, and thus creating a hazard for the users and the equipment. This paper presents a solid-state hybrid active/passive BTMS system. It includes Peltier effect heat pumps, heat sinks, heat spreaders and fans. It is designed with the objective of regulating the operating temperature of the battery cells while minimizing the parasitic power used to operate the BTMS. After its construction, C/1, 3C and 5C continuous discharge current tests were applied under ambient temperature values of ‒20°C, 0°C, 25°C and 40°C. Experimental results show that the proposed hybrid BTMS works in passive mode (hence does not consume any power) in an ambient temperature ranging from 0°C to 25°C, and consumes very little power in extreme values (less than 5% of available stored energy in li-ion battery pack). Keywords-component; lithium-ion battery; battery thermal management system; Peltier thermoelectric module;. , ,1752'8&7,21 /LWKLXPLRQ OLLRQ

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