CATL LMFP (LiMnFePO₄?) batteries for 700 km Tesla Model Y

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coulomb
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CATL LMFP (LiMnFePO₄?) batteries for 700 km Tesla Model Y

Post by coulomb »

The Electric Viking announces the 99th Game Changer™ this year :D

But this does seem ground breaking: 230 Wh/kg with all the advantages (and the very few remaining disadvantages I imagine, like cold weather performance) of LFP.

https://www.youtube.com/watch?v=ZwkwC-m ... tricViking



[ Edit: Added "kike cold weather performance" ]
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Re: CATL LMFP (LiMnFePO₄?) batteries for 700 km Tesla Model Y

Post by brunohill »

I can see a lot of over the air updates for the BMS happening. I wonder what the charge/discharge voltage "curves' are like?
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Re: CATL LMFP (LiMnFePO₄?) batteries for 700 km Tesla Model Y

Post by antiscab »

I can't wait to see LFMP
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Re: CATL LMFP (LiMnFePO₄?) batteries for 700 km Tesla Model Y

Post by brunohill »

Well there you go.

https://lithium-au.com/wp-content/uploa ... attery.pdf

So as voltage and temperature appear to determine battery degradation rates, is it fair to assume that the life expectancy would be less than LiFePO4 and perhaps more like LiMnO2 than batteries containing Cobalt?
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Re: CATL LMFP (LiMnFePO₄?) batteries for 700 km Tesla Model Y

Post by coulomb »

brunohill wrote: Thu, 04 Aug 2022, 20:33 Well there you go.

https://lithium-au.com/wp-content/uploa ... attery.pdf [/url]
Thanks!
So as voltage and temperature appear to determine battery degradation rates, is it fair to assume that the life expectancy would be less than LiFePO4 and perhaps more like LiMnO2 than batteries containing Cobalt?
I was thinking the same, at least that LMFP life would have to be less than LFP life. And with that high voltage "shelf" (as opposed to more of a "ramp" for the other lithium ternary cell chemistries) at the start of the discharge, it likely won't be practical to charge to 80% (say) and prolong battery life.

LMFP research cell curve.jpg
LMFP research cell curve.jpg (53.58 KiB) Viewed 94 times
Last edited by rhills on Fri, 05 Aug 2022, 00:06, edited 1 time in total.
Reason: Edited by Admin to add missing end-quote BBCode
MG ZS EV 2021 April 2021.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
Patching PIP-4048/5048 inverter-chargers.
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Re: CATL LMFP (LiMnFePO₄?) batteries for 700 km Tesla Model Y

Post by T1 Terry »

3CA and 5CA seem to be the better energy curves, 10CA has a very rapid fall from 4v to 3.25v, holds on for a bit before dropping to 3v, then it's all over and hope you were just rolling into a fast charging facility as that happened.
No matter what the discharge curve, it's all over by 3v regardless.

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Green but want to learn
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