The owner's electric car is parked on the open-air main road of the community, and the battery heats up and spontaneously ignites. Can I ask the property management company for compensation?

You can't ask the property company for compensation.

If the vehicle is parked in the toll parking lot and the vehicle is damaged artificially, you can ask the property management company for compensation. If the tree falls and the electric car is damaged, you can ask the property company for compensation. If the battery car spontaneously ignites, you can contact the store that sells the battery car, and then the battery car manufacturer will compensate.