New Batteries For EV's

nsaspook

Joined Aug 27, 2009
16,333

The 24V 200Ah Lithium Battery, 5120Wh LiFePO4 Battery I bought in june 2023 has dropped $250 for the same battery. I will buy another if the price cracks $1000.
 

nsaspook

Joined Aug 27, 2009
16,333
Capable, maybe someday, in practice, only time will tell. For larger systems like an EV battery the peak power requirements for a five minute charge are huge. 10kwh battery with a 10kW solar system takes about a hour (for a perfect system) for a full recharge.

https://www.inchcalculator.com/kilo...e=dc&uc_voltage_type=llv&uc_calculator_type=b

Think about the utility requirements for a 5 minute recharge.
 

cmartinez

Joined Jan 17, 2007
8,782
Capable, maybe someday, in practice, only time will tell. For larger systems like an EV battery the peak power requirements for a five minute charge are huge. 10kwh battery with a 10kW solar system takes about a hour (for a perfect system) for a full recharge.

https://www.inchcalculator.com/kilo...e=dc&uc_voltage_type=llv&uc_calculator_type=b

Think about the utility requirements for a 5 minute recharge.
I'm instead fantasizing about a room temperature superconductor breakthrough happening at the same time this battery tech becomes commercially viable ;)
 

nsaspook

Joined Aug 27, 2009
16,333
I'm instead fantasizing about a room temperature superconductor breakthrough happening at the same time this battery tech becomes commercially viable ;)
Even room-temp superconductors won't help much with this problem. The power loss improvements from superconducting lines from generation to battery will be at most 10%.
 

Thread Starter

MrAl

Joined Jun 17, 2014
13,716
I'm instead fantasizing about a room temperature superconductor breakthrough happening at the same time this battery tech becomes commercially viable ;)
Yeah that would revolutionize just about everything electronic, especially the higher power stuff.

I've been reading about new batteries now for a few years or more. Don't see any of them for sale yet that would replace what I normally use through. Currently I use alkaline, Li-ion, and LiFePO4.
 

cmartinez

Joined Jan 17, 2007
8,782
I'm currently reading a work of fiction, by Dean Koontz, "The Bad Weather Friend", and this paragraph (pronounced by one of the characters) drew my attention:

“There’s nothing quite so invigorating, so freeing, as piloting a gasoline-powered vehicle along an open road. Years from now, when all the vehicles are electric, when tens of millions of acres of Earth’s surface have been destroyed by open-pit mining for the enormous quantities of lithium and cobalt and nickel and copper required for EVs, when thousands of new landfills have been crammed full of batteries that can’t be recycled and are leaking horrifying toxins into the water table, when thousands of square miles of windmills have made extinct hundreds of species of birds with disastrous environmental effects, I will still—always, always—remember this special and exhilarating night, chauffeuring you two hither and yon in the dogged pursuit of justice, my destiny buddies.”
 

joeyd999

Joined Jun 6, 2011
6,328
I'm currently reading a work of fiction, by Dean Koontz, "The Bad Weather Friend", and this paragraph (pronounced by one of the characters) drew my attention:

“There’s nothing quite so invigorating, so freeing, as piloting a gasoline-powered vehicle along an open road. Years from now, when all the vehicles are electric, when tens of millions of acres of Earth’s surface have been destroyed by open-pit mining for the enormous quantities of lithium and cobalt and nickel and copper required for EVs, when thousands of new landfills have been crammed full of batteries that can’t be recycled and are leaking horrifying toxins into the water table, when thousands of square miles of windmills have made extinct hundreds of species of birds with disastrous environmental effects, I will still—always, always—remember this special and exhilarating night, chauffeuring you two hither and yon in the dogged pursuit of justice, my destiny buddies.”
EVs, windmills, and solar cells are forward-looking efforts by the Environmental-Industrial Complex to justify it's future existence.
 

cmartinez

Joined Jan 17, 2007
8,782
That last part about birds going extinct because of windmills I disagree with. But the part about dead, unrecicleable batteries filling up landfills deserves some mulling and consideration.
 

joeyd999

Joined Jun 6, 2011
6,328
That last part about birds going extinct because of windmills I disagree with. But the part about dead, unrecicleable batteries filling up landfills deserves some mulling and consideration.
Don't forget about the non-recyclable windmill blades that have about a 10 year lifespan (if that):

Selection_115.png
 
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nsaspook

Joined Aug 27, 2009
16,333
Yeah that would revolutionize just about everything electronic, especially the higher power stuff.
...
If only that were true about room temp superconductors. We will see improvements (we need 5 new 500GW generators instead ot 6) but I'm a sceptic about the ability to revolutionize just about everything electronic because there's a lot more to electronics than just conductivity (a RTSC must withstand high magnetic fields and electrical currents). First they will not be perfect electrical conductors (several physical AC magnetic effects will still generate losses) and we can already make power electronics that operatiate in the 98-99 percent efficiency level today.

https://indico.cern.ch/event/440690/contributions/1089769/attachments/1148950/1648370/U7-final.pdf
Superconductors subjected to varying magnetic fields see multiple heat sources that can impact conductor performance and stability All of the energy loss terms can be understood as emanating from the voltage induced in the conductor: The hysteretic nature of magnetization in type II superconductors, i.e. flux flow combined with flux pinning, results in a net energy loss when subjected to a field cycle The combination of individual superconducting filaments and a separating normal-metal matrix results in a coupling Joule loss Similarly, the normal-metal stabilizer sees traditional eddy currents

https://www.scirp.org/journal/paperinformation?paperid=66746
Energy Losses in Superconductors
Absence of macroscopic resistance is the most essential trait of superconductors for their practical applications. Yet several mechanisms lead to dissipation in the superconducting state such as weak links, fluctuations, and the motion of flux vortices in the mixed state of type II materials. Thus it is of practical as well as fundamental interest to explore these mechanisms to the fullest extent and to learn how to control them. Regarding the control of flux motion, most research efforts aim at preventing flux motion by introducing a variety of pinning strategies. In the present work, we discuss the circumstances under which it is possible to exclude vortices in the first place, or to short their motion through intrinsic multi-band effects.
Things like Tesla motors are already 97% efficient. For systems engineering things like cost, tensile strength, chemical stability, toxicity and malleability can often be more important than resistive losses in the total efficiency equation.
Typical examples.
https://www.eprmagazine.com/special...e-smart-utilities-with-99-percent-efficiency/
Fuji Electric’s power backup solutions are crucial in catalysing the energy management initiative. These systems offer high efficiency, achieving an outstanding efficiency of up to 99 per cent with in-house developed power semiconductor technology.

https://www.jotrin.com/technology/details/llc-transformer-provides-up-to-99-efficiency-
MINNEAPOLIS, MN – Precision, Inc. (www.precision-inc.com) announces the global launch of its new LLC transformer which provides up to 99% efficiency and extremely low power loss. The technology combines two discrete components – a resonant inductor and transformer – into a single package reducing costs by as much as 75% and real estate up to 50%.
 
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Thread Starter

MrAl

Joined Jun 17, 2014
13,716
That last part about birds going extinct because of windmills I disagree with. But the part about dead, unrecicleable batteries filling up landfills deserves some mulling and consideration.
It's interesting that animals cannot 'evolve' as fast as humans, so they may take years, if ever, to learn not to fly into the giant fan blades.
 
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