EVs still account for a small fraction of sales today, but automakers are about to launch scads of BEVs. Here’s a list of new EV models expected to launch in the US and Canada over the next 15 months:Acura ZDXAudi A6 and Q6 e-tronBMW i5 and i7BrightDrop Zevo 400Buick electric crossover (maybe)Cadillac Escalade IQ and…