Abstract:
As the automotive industry progresses, electric vehicles (EV) grow with increasing demand
throughout the world. Nickel metal hydride (NiMH) battery and lithium-ion (Li-ion) are widely
used in EV due to their advantages such as impressive energy density, good power density, and
low self-discharge. However, the batteries must be operated within their optimum range for
safety and goodthermal management to enable a longer lifespan, lower costs, and improve
safety for EV batteries. But most of the cases such as fast changing, battery discharge it is not
possible to keep the designed operating conditions of battery. So, battery thermal management
system is necessary for good operating conditions of the battery. Most of the cases liquid
cooling method is used with coolant as water. But water can't be used in all countries because
of the freezing point of the water. So, ethylene glycol and water mixture is proposed. In this
work experimental study of different coolants such as water, ethylene glycol, ethylene glycol
and water mixture in the ratio of 40:60, 50:50, 60:40 and numerical simulation of water,
ethylene glycol and ethylene glycol - water in the ratio of 60:40 is carried out. From the
comparison between different coolants it can be observed that ethylene glycol and water with
ratio of 60:40 was more effective than others
