Yes, they can. The battery can explode as many electrical components do if they are short-circuited (galaxy note 7 for example). If the car crashes, circuits could touch themselves and create short-circuits. read more
If the car crashes, circuits could touch themselves and create short-circuits. However, electric cars companies know how to prevent them easily and you may never hear about an explosion including an electric car. Even if you try to explode an electric car, you will probably not succeed. read more
Almost all electric cars currently on their way to the marketplace use large arrays of lithium-ion (Li-ion) batteries. And -- stop me if this sounds familiar -- Li-ion batteries have a tendency to catch fire and occasionally explode. We've learned to live with the dangers of cars with internal combustion engines. read more