I see and hear about a random EV that has X range in 20 degree (Celsius) weather, steady speed of 110 km/h, but Y range (significant difference) if it’s 130 km/h. Even more of a difference if it’s 0 degrees.
If it needs to pull a trailer with 500kg it loses, i don’t know, 25% of the range?
There are probably other examples. I’m not talking these specific examples, i just mean in general.
Nobody ever talks about that when it comes to cars that run on gas or diesel, i assume because it doesnt affect them as much. Why?
In: Engineering
The biggest reason is that current battery technology relies on chemical reactions, and the efficiency of these reactions decreases with temperature. At lower temperatures, you can’t get as much power out of a battery.
Another reason is that electric vehicles use the battery for heating. In a gas engine, the heat used to keep the occupants warm is waste heat created by the engine so no additional power is required. But battery operated cars use electrical resistance heating which takes power.
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