TurretLauncher OP t1_jdm9cmj wrote
Reply to comment by hardsoft in Glenvale Solar, a Boston-based company, is planning to install a 240-acre solar installation in Keene, with construction beginning in 2026 by TurretLauncher
There are cars today with solar panels on the car hood/trunk/roof. It’s the same 12 volts that come out from the cigarette lighter port. Low-voltage solar power can flow into that port as well as out of it.
hardsoft t1_jdmdk9m wrote
Not for an EV. There are no EVs that run on 12V. They still have 12V batteries for accessories and such because it's considered an inherently safe voltage (low shock risk) and so they can save money on wiring and use chassis as a ground.
The propulsion system uses higher voltage batteries and regardless, the output voltage and current from a solar panel can vary with light intensity. You need conversation electronics.
And solar on an EV is basically a gimmick. The minimal extra range relative to the additional cost is absurd.
TurretLauncher OP t1_jdmj0iu wrote
> “All the ECUs in the vehicle are powered from the low voltage, as well as the power relays that separate power from the high-voltage battery pack and the rest of the high-voltage network in the car,” he said. “That separation allows us to safely disconnect the high voltage from the low voltage when the vehicle is not being driven or in the event of a crash.”
>
> EVs can be assisted to start when the 12V battery has become too depleted to allow the high voltage battery to power up. In an EV jump start, you are essentially augmenting the 12V battery, like you would with a traditional jump start, but there is no high current surge like there would be during the jump starting application on an internal combustion engine vehicle. The jump starter provides auxiliary capacity to the system to allow it to power up. So, yes, jump starting an EV is sometimes necessary.
As the above clearly shows, EVs do indeed run on 12V batteries. You can't start an EV (i.e., make it run) or operate an EV (all the 100+ ECUs - Electronic Control Units - run only on 12V current) without 12V battery power. It's this 12V battery - critically necessary for any and all vehicle activity - that gets recharged by 12V parking canopies.
The electronic interface between 12V solar panels and 12V batteries is known as a "charge controller". A charge controller only costs 10 bucks.
hardsoft t1_jdmk3r9 wrote
The above confirms exactly what I already stated.
You can "jump" an EV with a dead 12V battery (happens to Teslas all the time) to turn it on, but you can't drive off the 12V battery.
Charging the 12V battery independently doesn't extend range in any meaningful sense.
I'm an electrical engineer and you clearly have no idea what you're talking about.
TurretLauncher OP t1_jdp56h3 wrote
Charging the 12V battery independently can keep you from needing a jump start (i.e., being stranded), which, as you yourself said, “happens all the time”.
hardsoft t1_jdp70bk wrote
On earlier models yes.
But to get this straight. Instead of solar farms powering homes we should add a bunch of infrastructure to parking lots to charge 12V batteries?
It's like you want to destroy the environment.
TurretLauncher OP t1_jdp7n34 wrote
A $10 charge controller is not “a bunch of infrastructure”, and nobody ever said that the solar power from parking canopies would only be used for that purpose.
hardsoft t1_jdpd7jw wrote
Are these canopies made out of $10 charge controllers or are you seriously ignoring the actual additional infrastructure you're advocating for?
We need you on world problem think tanks to solve more of our problems... /s
TurretLauncher OP t1_jdpfea5 wrote
The $10 charge controllers are all that is specifically needed for the EV application. Other applications (e.g., powering nearby buildings) will need different additional infrastructure (“additional” meaning in addition to the canopies themselves).
hardsoft t1_jdpgv34 wrote
The comparison is to the proposed solar farm.
The parking lot canopies are additional infrastructure. You claimed savings on simpler, cheaper electronics that would charge 12V car batteries.
That makes no sense whatsoever. It's such a moronic idea that even if it existed no one would use it to charge their 12V batteries. The energy savings it would provide would be absolutely dwarfed by the environmental impact of it's manufacturing and construction.
But now you're saying it's also going to have traditional electrical infrastructure to feed power into the local grid and presumably do useful stuff like power homes and charge EV propulsion batteries, but that goes against the whole supposed savings by not needing any such electrical infrastructure...
I don't think you even know what you're talking about at this point.
TurretLauncher OP t1_jdq3uys wrote
The original comment referenced “additional benefits” available with parking canopies beyond what a typical solar installation provides: shelter from weather, and EV charging at remote locations.
You falsely alleged that EV charging would require “a bunch of [additional] infrastructure” beyond the parking canopies themselves, and I proved that you were wrong.
As to your arrogance and inability to comprehend, those are your own personal problems for you to work on.
hardsoft t1_jdqf0q4 wrote
Haha. Charging 12V batteries is not an additional benefit. It's additional environmental destruction for no reason.
And again... 12V batteries aren't EV batteries. By definition.
> An electric vehicle battery (EVB, also known as a traction battery) is a rechargeable battery used to power the electric motors of a battery electric vehicle (BEV) or hybrid electric vehicle (HEV).
> Electric vehicle batteries differ from starting, lighting, and ignition (SLI) batteries, as they are typically lithium-ion batteries that are designed for high power-to-weight ratio, specific energy and energy density; smaller, lighter batteries are desirable because they reduce the weight of the vehicle and therefore ...
EV charging is universally recognized as charging the EV battery. You don't get to invent your own language because you're too insecure to admit you're wrong.
WikiSummarizerBot t1_jdqf1me wrote
[Electric vehicle battery](https://en.m.wikipedia.org/wiki/Electric_vehicle_battery#:~:text=Electric vehicle batteries differ from,of the vehicle and therefore)
>An electric vehicle battery (EVB, also known as a traction battery) is a rechargeable battery used to power the electric motors of a battery electric vehicle (BEV) or hybrid electric vehicle (HEV). Electric vehicle batteries differ from starting, lighting, and ignition (SLI) batteries, as they are typically lithium-ion batteries that are designed for high power-to-weight ratio, specific energy and energy density; smaller, lighter batteries are desirable because they reduce the weight of the vehicle and therefore improve its performance.
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TurretLauncher OP t1_jdqqpmd wrote
As previously explained,
> You can't start an EV (i.e., make it run) or operate an EV (all the 100+ ECUs - Electronic Control Units - run only on 12V current) without 12V battery power..
The 12V battery inside an EV is indeed an EV battery, and charging it is by definition EV charging.
hardsoft t1_jdqzb11 wrote
EV charging is charging the EV battery. And 12V batteries aren't EV batteries. They're used in ICE vehicles as well. Their name doesn't change depending on use...
Or please provide a reference to charging the 12V battery inside an EV (exclusively) as being referred to as "EV charging". Even colloquial references like from auto reviews in Car and Driver or Motor Trend would be acceptable.
Along with an explanation for why you included "EV" instead on just "vehicle charging" (as all vehicles have low voltage battery systems).
Otherwise we can just acknowledge you're a troll using unconventional and disingenuous language because you're too insecure to admit you're wrong.
TurretLauncher OP t1_jdr04jn wrote
Any battery inside an EV and crucial for its operation is, by definition, an EV battery.
As you correctly point out, ICE vehicles can also charge their 12V batteries using the same system.
> Advance Auto Parts, a leading automotive aftermarket parts retailer, today announced the introduction of DieHard EV with xEV by Clarios, becoming the first auto parts retailer to sell 12-volt batteries designed specifically for hybrid and electric vehicles. Advance continues to drive innovation and expand its robust parts assortment with DieHard EV, which is the latest offering of its tens-of-thousands of hybrid and electric vehicle parts already available. DieHard EV is available exclusively at Advance stores, participating Carquest stores and advanceautoparts.com. Advance also provides free battery testing and installation of DieHard EV and other batteries at its retail locations.
>
> DieHard EV batteries are an advanced, low-voltage technology designed to provide superior reliability, durability and safety for all hybrid and electric vehicles, which place more demand on their low-voltage batteries. To address this, DieHard EV batteries offer 30 percent more cycling vs. standard AGM batteries and provides stable performance from day one through end of life. Additionally, their robust construction helps assure critical safety functions like brakes, steering and lighting remain operational during an emergency.
hardsoft t1_jdr173o wrote
Again, please provide a reference to charging the 12V battery inside an EV (exclusively) as being referred to as "EV charging". Even colloquial references like from auto reviews in Car and Driver or Motor Trend would be acceptable.
Along with an explanation for why you included "EV" instead on just "vehicle charging" (as all vehicles have low voltage battery systems).
Otherwise we can just acknowledge you're a troll using unconventional and disingenuous language because you're too insecure to admit you're wrong.
TurretLauncher OP t1_jdr3l72 wrote
I've proven that the 12V battery inside an EV is in fact an EV battery. Charging an EV battery is, by definition, EV charging. You are wrong and you're too stubborn to admit it.
hardsoft t1_jdr476r wrote
Another potential source of references, more in line with your specific example here, would be from restaurants, shopping centers, rest stops, etc, advertising free "EV charging" for customers, with that being a service to exclusively charge the 12V battery.
Surely if you're not the only human on the planet using this language it's easy to find a single reference.
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