On 7/7/20 2:43 AM, EVDL Administrator via EV wrote:
I also seem to recall some kind of patent-related LiFePO4 problem. This may have been the reason that hobbyists jumped on the cheap and cheerful Chinese LiFePO4 cells from Thundersky, CALB, and the like. Again dredging up from memory, I think that hose companies somehow (allegedly) made an end run around the patent and licensing concerns. Now, if I'm not mistaken, Tesla's development partner in the "million mile battery" is a Chinese firm. That's ... uh ... interesting. So has the EV world rehabilitated lithium iron phosphate's reputation? Has its specific energy problem been solved? What about licensing and patents?
I suppose, like NiMH, the patents on LPF are no longer in effect. But, I don't know that for sure.
CATL is to the the supplier of LFP batteries for Chinese Teslas. I don't think it is known whether those batteries will be offered elsewhere in the world. Presumably, there has been much progress on LFP cells. Though, I don't think the "million mile" cells will be LFP. Or, maybe I'm wrong.
There is much buzz about a Tesla battery factory in California which is rumored to be about to produce the better, "million mile", cells.
Short story: no one knows for sure. That is why we are eagerly awaiting Battery Day.
Jack Rickard has the view that Tesla is wary of "the Osborne" effect and will not formally introduce vastly improved cells until they are being manufactured.
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