Electric motor vehicles Myth vs Reality


A Tesla Motors Inc. Model S electric automobile stands connected to a charger inside

Myth 1: Hybrid and electric cars may get good mileage, but they suffer from low power

Fact: One of the major advantages of environmentally-friendly vehicles is their high fuel efficiency. But many motorists assume green cars have poorer performance compared to gasoline-fueled cars. This is because they are engineered to accelerate slowly to prevent fuel-efficiency loss from sudden accelerations.

Myth 2: Electric cars could give users an electric shock

Fact: Batteries in eco-friendly cars have a higher power density compared to gasoline models, but the chance of getting an electric shock from them is virtually zero thanks to stringent safety tests and technological breakthroughs. The main controller and sub-controllers in the car always monitor electricity conditions and shut the power down instantly in case of a crash. Electric cars are equipped with a battery package that can be opened only with special tools to keep drivers from mishandling the battery. Furthermore, the entire system will shut down the moment the battery package is opened forcibly.

Myth 3: But still, there is a possibility of getting electrocuted if the vehicle comes in contact with water

Fact: Batteries in eco-friendly cars decrease in power rapidly as soon as they come in contact with water in order to prevent any type of electric shock. The battery mode normally operates in a series structure mode, but immediately switches to a parallel structure mode when in contact with water. Hence, a 370V power supply will immediately switch to 3.7V as soon as it touches water.

Myth 4: Owners have to change pricey batteries 2 to 3 times during the life of their car

Fact: Battery life is one of the most common misunderstandings about eco-friendly vehicles. Battery life for eco-friendly vehicles is extremely long.

Myth 5: Green car batteries are easily subject to the self-discharge phenomenon

Fact: Self-discharge often occurs in car batteries when left unused for a long period of time. Lead acid batteries used by some car manufacturers are particularly vulnerable to this phenomenon. However, the lithium-ion polymer batteries in electric cars have self-discharge rates that are 20 times lower than lead acid batteries. Even when the vehicle is unused for more than 60 days, the self-discharge rate is only 2 percent. Also, while some customers have concerns about quality degradation of batteries in hot temperatures, lithium-ion polymer batteries can operate in temperatures of 65° Celsius or even higher.

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