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There is need of the hour to reduce greenhouse gases and become carbon neutral. Global warming and the increase in pollution are big threats to humankind. The Paris agreement is a major step towards reducing pollution and greenhouse gases. To improve the situation, hydrogen fuel cell electric vehicle is a promising technology that enables zero emissions, zero greenhouse gas generation and high efficiency with superior performance for long-range applications as compared to other green technologies. Although it is a promising and beneficial technology, there is limited information available in the public domain about fuel cell technology and its accessories. Air intake and cooling system’s right functioning is very important for proper fuel cell functioning. Incoming air to the fuel cell stack needs to be processed by cleaning, humidifying, cooling or heating. If the incoming air isn't clean, it will deteriorate the fuel cell's performance; it may get blocked, or even damaged.

Fuel cell electric vehicles generally have two power sources – the fuel cell power system and a high voltage battery pack - to power the vehicle operations. The fuel cell power system is the main source of power for the vehicle and its operations are supported by the battery pack. The battery pack helps to tackle the dynamic power demands from the vehicle such as during acceleration, to which the response of the fuel cell might be slower. The battery is also used to recover the energy from regeneration during braking and can also be used to extend the range of the vehicle in case the storage tanks runs out of hydrogen. In order to maximize the fuel efficiency of the fuel cell power system it is critical that these two power sources are used in conjunction with each other in an optimal manner.