How is a large Li-Ion battery pack, such as in a car, manufactured? What makes it difficult to produce, if anything?
This question is born from the high cost of Tesla Model S, which is around $70k. In contrast, the average 4-door car is more like $20 or $30k despite having an internal combustion engine.
I don't understand that. I would have thought that a big battery, which has no moving parts, would be much much cheaper than a 4-cylinder engine.
So what's the expense in making a large Li-Ion battery? Is lithium much more expensive than steel? Are there major (expensive) safety precautions in manufacture? Is the battery pack very intricately "woven" with cells? Something else?