return2ozmaBYD Reveals the ‘World’s Longest-Range EV’ as American Auto Industry Struggles to Keep Pace
Ilovethebomb1,036 km (644 miles) on a single charge under China’s CLTC testing standard.
Does anyone know how realistic this range is? You can get some absurd range from a vehicle if you’re driving on a closed course at 60kmh with no air conditioning or entertainment.
Expect CLTC to be advertising the best possible range.
There’s a ceramic battery hitting the market that has a marginally higher density and nothing is stopping them from adding more batteries. There’s also a new hub-motor concept that has a lot less losses, but they’re not car sized yet.
Getting to 644 would be as easy as throwing more batteries at it, but i’d expect those numbers to come down a bit, or the price to be much higher.
Adding more batteries increases the weight, though, which in turn makes the motors work harder, and therefore makes them use more energy to do the same thing.
That’s not that big of a deal for long-range trips, on which you typically don’t have to accelarate often.
Keeping the car going at a certain speed depends on several types of resistance, most importantly air resistance, but not really on weight.
More weight plays a bigger role for energy consumption in urban ares, where the weight needs to be accelerated more often than on the highway, the mileage per kWh is yet typically higher than on the highway due to the lower speed and less air resistance.
What I’m trying to say: I’d pick the bigger battery any time over the smaller one, if the price is reasonable.
EVs are already heavy. The weight from some additional batteries don’t play a big role.
Keeping the car going at a certain speed depends on several types of resistance, most importantly air resistance, but not really on weight.
More weight plays a bigger role for energy consumption in urban ares, where the weight needs to be accelerated more often than on the highway, the mileage per kWh is yet typically higher than on the highway due to the lower speed and less air resistance.
What I’m trying to say: I’d pick the bigger battery any time over the smaller one, if the price is reasonable.
EVs are already heavy. The weight from some additional batteries don’t play a big role.
Also, with breaking recovering energy, this negates some of the issues too. The inertia is used to recharge the batteries, so the losses are from friction and heat losses. Obviously lighter is better, but a lot of the issues of weight on efficiency can be reduced. Weight is bad for safety though, so there is that to consider.
It sure does. But we have to consider that recharging is less efficient than not spending the energy on acceleration in the first place, so heavier EVs are worse off than lighter ones; it’s not only losses from friction and heat losses - those come on top.
And you’re spot-on with the danger that comes from weight; being in an accident with a lot of kinetic energy that needs to be absorbed is not great.
And you’re spot-on with the danger that comes from weight; being in an accident with a lot of kinetic energy that needs to be absorbed is not great.