Re: [EVDL] plusing charger controller
On 18 Mar 2019 at 14:04, ken via EV wrote: > there must be some kind of modaul that you'd input on seconds / off seconds, > then it would run a relay to controll charger on/off or program an > ?adrainal? the little computer. You're talking about charging, yes? I can't understand why you want to do this. I don't see the advantage. What am I missing? David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] plusing charger controller
On 18 Mar 2019 at 13:52, ken via EV wrote: > i guess i could charging voltage but with current lower than > shunts. Is there a typo in this? I have no idea what it's supposed to mean. > > where which item would dc to dc control the amperage down to 500ma and > 72 volts ? Same here. I can't tell what you're asking. If you want people to help you with these questions, may I suggest that you please slow down when you type, and proofread and correct before you send the message? Thanks. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] plusing charger controller/ ebay Digital Display Time Delay Relay Timing Timer
https://www.ebay.com/p/1500w-0-999h-Digital-Display-Time-Delay-Relay-Timing-Timer-Cycling-Module-DC-12v/16027066160?_trksid=p2047675.l2644 theses come in many variations. some go from few seconds to 999 hours with delay also. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] plusing charger controller
On Sun, March 17, 2019 6:09 pm, Dan Baker via EV wrote: > Great question Ken, want the same answer! I have 2 nice Sevcon Lead acid > chargers that I would like to re-purpose for charging Lithium. End > voltages would likely be too high, I am planning on running a BMS. But > when max voltage is obtained I take it the BMS should start taking the > load instead? Would keep the cells in check but then the BMS eats lots of there must be some kind of modaul that you'd input on seconds / off seconds, then it would run a relay to controll charger on/off or program an ?adrainal? the little computer. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] plusing charger controller
On Mon, March 18, 2019 3:45 am, Steve Heath via EV wrote: > Alternatively get a dc-dc converter from ebay and use that as the front > end. Your existing charger is the input and then set the output current and both packs I have have shunts on each cell, but the bms is not sensing properly, so i guess i could charging voltage but with current lower than shunts. it would be slow but non damaging. where which item would dc to dc control the amperage down to 500ma and 72 volts ? ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Alibaba/Aliexpress Lithium
> at a > >>>> typical self preservation point e.g cutoff voltage used by BMS, the > >>>> capacities are different. As a result, there is a "Peukerts" effect > >> where > >>>> the amount of capacity that can be obtained is different depending on > >> the > >>>> discharge current. It is not the same Peukerts effect but the end > >> result is > >>>> the same. Discharge more, less capacity... > >>>>>> The data sheet for a Panasonic 18650 shows this effect very well ( > >>>> https://www.batteryspace.com/prod-specs/NCR18650B.pdf ) where a cut > off > >>>> voltage of 3v gives a capacity of 2400mAh at 2c and 3300 mAh at 0.2C > >> . At > >>>> the 0% soc point they all come out at 3300 and 3400. So discharging to > >> 0% > >>>> soc, the discharge current is more or less irrelevant. Interestingly > >> these > >>>> results are taken at constant cell temperature where any overheating > >>>> advantage is not applicable. Without seeing the complete paper that > was > >>>> referred to, it is difficult to know if any comparison with > manufacturer > >>>> data was made or whether tests were done at constant temperature and > >> what > >>>> the results were. > >>>>>> Discharging to a lower 15-20% level to protect the battery, there > is a > >>>> big difference. If you want to get the best capacity out of a li ion > >>>> battery with a BMS, either reduce the discharge rate or change the BMS > >> to > >>>> accept a lower cutoff voltage and risk battery damage. > >>>> -- next part -- > >>>> An HTML attachment was scrubbed... > >>>> URL: < > >>>> > >> > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190317/1ddbc7eb/attachment.html > >>>> ___ > >>>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >>>> http://lists.evdl.org/listinfo.cgi/ev-evdl.org > >>>> Please discuss EV drag racing at NEDRA ( > >>>> http://groups.yahoo.com/group/NEDRA) > >>>> > >>>> > >>> -- next part -- > >>> An HTML attachment was scrubbed... > >>> URL: < > >> > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190316/f6f8af5b/attachment.html > >>> ___ > >>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >>> http://lists.evdl.org/listinfo.cgi/ev-evdl.org > >>> Please discuss EV drag racing at NEDRA ( > >> http://groups.yahoo.com/group/NEDRA) > >> ___ > >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >> http://lists.evdl.org/listinfo.cgi/ev-evdl.org > >> Please discuss EV drag racing at NEDRA ( > >> http://groups.yahoo.com/group/NEDRA) > >> > >> > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190318/eaded1dd/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190318/b59d983d/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Alibaba/Aliexpress Lithium
the same. Discharge more, less capacity... > >>>>>> The data sheet for a Panasonic 18650 shows this effect very well ( > >>>> https://www.batteryspace.com/prod-specs/NCR18650B.pdf ) where a cut > off > >>>> voltage of 3v gives a capacity of 2400mAh at 2c and 3300 mAh at 0.2C > >> . At > >>>> the 0% soc point they all come out at 3300 and 3400. So discharging to > >> 0% > >>>> soc, the discharge current is more or less irrelevant. Interestingly > >> these > >>>> results are taken at constant cell temperature where any overheating > >>>> advantage is not applicable. Without seeing the complete paper that > was > >>>> referred to, it is difficult to know if any comparison with > manufacturer > >>>> data was made or whether tests were done at constant temperature and > >> what > >>>> the results were. > >>>>>> Discharging to a lower 15-20% level to protect the battery, there > is a > >>>> big difference. If you want to get the best capacity out of a li ion > >>>> battery with a BMS, either reduce the discharge rate or change the BMS > >> to > >>>> accept a lower cutoff voltage and risk battery damage. > >>>> -- next part -- > >>>> An HTML attachment was scrubbed... > >>>> URL: < > >>>> > >> > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190317/1ddbc7eb/attachment.html > >>>> ___ > >>>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >>>> http://lists.evdl.org/listinfo.cgi/ev-evdl.org > >>>> Please discuss EV drag racing at NEDRA ( > >>>> http://groups.yahoo.com/group/NEDRA) > >>>> > >>>> > >>> -- next part -- > >>> An HTML attachment was scrubbed... > >>> URL: < > >> > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190316/f6f8af5b/attachment.html > >>> ___ > >>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >>> http://lists.evdl.org/listinfo.cgi/ev-evdl.org > >>> Please discuss EV drag racing at NEDRA ( > >> http://groups.yahoo.com/group/NEDRA) > >> ___ > >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >> http://lists.evdl.org/listinfo.cgi/ev-evdl.org > >> Please discuss EV drag racing at NEDRA ( > >> http://groups.yahoo.com/group/NEDRA) > >> > >> > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190318/eaded1dd/attachment.html> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] ?seeking EVSE-share experiences & advice
On 3/18/19 3:06 AM, brucedp5 via EV wrote: Almost everyone's house has lots of front lawn space here in TX ... Instead, My first thought is grief from city zoning and/or HOA. In many areas it is just fine to park in your front yard, in many others, not. You have identified a house? I know nothing of the lay out of the SA VA but those places normally have attractive parking in garages and lots that are conveniently located to the offices. Do you see street parking that is attractive to VA people? I have LONG been a proponent of voluntary payment for charging. A sign something like: "If you like, make a contribution via PayPal to address>." Sadly, I've never seen a case where that has been adopted. Even where I have offered to fund the installations. I THINK Tesla is still giving away destination EVSEs. In some cases, they have added at least one J1772 to the package. Two or more Tesla units plus a J1772. The Tesla units have the very nice feature of being able to share a single circuit. I thought I'd put cement parking in (cement does not need to be mowed). But this leads to the next thought of utilizing that space. Since there will be parking for a several cars, Watt-If these parking spaces in my front yard, were EV-only with EVSE? (I told you it was a wild-idea) ... A good strategy for keeping the riff raff ICE from clogging your parking. A caution: I know one SA Tesla owner who does not have home charging. He relies almost solely on free Tesla and J1772 charge stations. He tends to leave his car parked and charging over night a few miles from his home. Personally, I feel that behavior subverts the purpose of having free charging. That is, if you offer free charging and voluntary payment, you may be abused. There is only one way to find out for sure. I encourage you to give it a try. Jukka may be able to offer you some EVSEs as demos for his Parking Energy enterprise. I hope that they will eventually be looking for some high visibility USA locations. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] ?seeking EVSE-share experiences & advice
Many residential neighborhoods don’t allow commercial operators. Even if they
do your neighbors will not like it.
Sent from my iPhone
> On Mar 18, 2019, at 3:06 AM, brucedp5 via EV wrote:
>
>
>
> % Bottom-line/summary: I request feedback of experiences of sharing their
> home EVSE.
>
> Personal-status: I'm at the point where I am looking at buying a house in
> the San Antonio (sa) area near the va hospital (this was the reason for the
> move to Texas).
>
> Willie has heard me talk of some of my (nutty-wackadoodle) ideas, so if he
> is rolling his eyes right now, he's justified. So I ask, is the following
> idea just another one of brucedp's wild-eyed pipe-dreams (w/o the pipe), or
> could it actually happen/work (benefiting many, & I might just break even
> after decade).
>
> Almost everyone's house has lots of front lawn space here in TX ... Instead,
> I thought I'd put cement parking in (cement does not need to be mowed). But
> this leads to the next thought of utilizing that space.
>
> Since there will be parking for a several cars,
> Watt-If these parking spaces in my front yard,
> were EV-only with EVSE? (I told you it was a wild-idea) ...
>
> Being a charging nut, I used the free EVSE look-up tool plugshare.com , I
> found there are VW-dieselgate $M funded electrify-america public L3-50kW
> EVSE @a-few walmart stores
> http://electric-vehicle-discussion-list.413529.n4.nabble.com/Walmart-Electric-Highway-tp4691970p4691973.html
>
> These (below) are not online yet (under construction), but will have
> multiple dual head (CHAdeMO ) L3-50kW EVSE
> https://s3.amazonaws.com/plugshare.production.photos/photos/119250.jpg
> cost: $1 session+ $0.30/minute. i.e. a used 22kWh Leaf pushing ~16kW over
> a 20minute period would cost ($1+ 20*$0.30= ) $7. after 10minutes, there is
> a $0.40/min idling fee as an incentive to leave. MC and Visa accepted:
>
> https://www.plugshare.com/location/169448
> walmart (northern) sa
>
> https://www.plugshare.com/location/169604
> walmart houston
>
> https://www.plugshare.com/location/70717
> walmart austin
>
> https://www.plugshare.com/location/168277
> walmart waco
>
> https://www.plugshare.com/location/174438
> sam's dfw
>
> https://www.plugshare.com/location/169417
> walmart sweetwater
>
> https://www.plugshare.com/location/171867
> walmart midland
>
> https://www.plugshare.com/location/169419
> walmart ft stockton
>
> A L3-50kW EVSE would be 1/3 the cost of buying a house. So, I'll back off on
> fantasizing having any L3-50kW EVSE in my front yard, and focus on L2 (3, 6,
> maybe 22kW).
>
> Using plugshare.com again but searching for j1772, there are only a couple
> available near the va hospital:
>
> https://www.plugshare.com/location/5766
> nearby L2
>
> The VA hospital is fed government, who (at this time) are not interested in
> providing EVSE for Vets or the hospital workers to use. So, if I could make
> my home EVSE parking spaces available (for break even fee), I could help
> EV-only driving Vets and va hospital workers.
>
> A few blocks away, there are 2 large apt complexes which plugshare.com
> does not show as offering EVSE to their residents. If I still had available
> spaces at night the VA Dr's Tesla's aren't using, I could offer them to
> those apt. residents for an overnight use fee.
>
> I made contact with my local sa utility, who seem interested in my offering
> EVSE
> https://www.cpsenergy.com/ev
>
> Obviously, there will be a lot of up front costs, I would have to begin
> small, recouping expenditures over time (depreciated assets) ...
> and the whole thing may not happen at all if I run into red-tape hurdles
> from city-hall (you never know).
>
> *** But if anyone is sharing their home EVSE, I would like to know their
> experiences.
> %
>
>
>
>
> For EVLN EV-newswire posts use:
> http://evdl.org/archive/
>
>
> {brucedp.neocities.org}
>
> --
> Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/
> ___
> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> http://lists.evdl.org/listinfo.cgi/ev-evdl.org
> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
>
___
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] plusing charger controller
Alternatively get a dc-dc converter from ebay and use that as the front end. Your existing charger is the input and then set the output current and voltage to match the battery pack. Used that to charge a 72volt pack from a 48v charger. Steve On 18/03/2019 06:20, EVDL Administrator via EV wrote: On 17 Mar 2019 at 16:39, ken via EV wrote: I like to see some kind of a charger timer that could control the input to the charger as on/off This is pretty much what a cycle dropping charge controller does. It's a relatively simple (crude) method. The charger is designed to produce a voltage higher than the battery's fully charged (on charge) voltage. The controller monitors the voltage, and shuts off the charger when it rises above some threshold (typically 2.35 to 2.45 volts per cell). With the charger off, the battery voltage then falls until it crosses some lower threshold (hysteresis), and the charger turns on again. This cycle repeats, usually for hours. As the battery works its way through its absorption phase, gradually the on time becomes shorter and the off time longer. This effectively tapers the average current as the battery reaches full. Normally the switching is done at the charger output, but I've seen one oddball charger where the charger INPUT (tansformer primary) was switched on and off. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] ?seeking EVSE-share experiences & advice
Kudos Bruce Kudos!!! Great idea!!!
On a serious side, I’d check with a local electrician to see what
restrictions there be on how many electrons can be pumped without taxing
your electrical infrastructure and what may need to be beefed up.
Especially if you are planning multiple charge points.
Would it be better to offer several more Level 1’s than a single or two
Level 2’s? On an 8 hour shift, Level 1 would provide 3 to 5 miles an hour
of charging; enough to cover a round trip commute in most cases.
As being a veteran, do you need any help financially?
Good luck to you at the VA. Please keep us informed as you go along!
On Mon, Mar 18, 2019 at 4:15 AM brucedp5 via EV wrote:
>
>
> % Bottom-line/summary: I request feedback of experiences of sharing their
> home EVSE.
>
> Personal-status: I'm at the point where I am looking at buying a house in
> the San Antonio (sa) area near the va hospital (this was the reason for the
> move to Texas).
>
> Willie has heard me talk of some of my (nutty-wackadoodle) ideas, so if he
> is rolling his eyes right now, he's justified. So I ask, is the following
> idea just another one of brucedp's wild-eyed pipe-dreams (w/o the pipe), or
> could it actually happen/work (benefiting many, & I might just break even
> after decade).
>
> Almost everyone's house has lots of front lawn space here in TX ...
> Instead,
> I thought I'd put cement parking in (cement does not need to be mowed). But
> this leads to the next thought of utilizing that space.
>
> Since there will be parking for a several cars,
> Watt-If these parking spaces in my front yard,
> were EV-only with EVSE? (I told you it was a wild-idea) ...
>
> Being a charging nut, I used the free EVSE look-up tool plugshare.com , I
> found there are VW-dieselgate $M funded electrify-america public L3-50kW
> EVSE @a-few walmart stores
>
> http://electric-vehicle-discussion-list.413529.n4.nabble.com/Walmart-Electric-Highway-tp4691970p4691973.html
>
> These (below) are not online yet (under construction), but will have
> multiple dual head (CHAdeMO ) L3-50kW EVSE
> https://s3.amazonaws.com/plugshare.production.photos/photos/119250.jpg
> cost: $1 session+ $0.30/minute. i.e. a used 22kWh Leaf pushing ~16kW over
> a 20minute period would cost ($1+ 20*$0.30= ) $7. after 10minutes, there is
> a $0.40/min idling fee as an incentive to leave. MC and Visa accepted:
>
> https://www.plugshare.com/location/169448
> walmart (northern) sa
>
> https://www.plugshare.com/location/169604
> walmart houston
>
> https://www.plugshare.com/location/70717
> walmart austin
>
> https://www.plugshare.com/location/168277
> walmart waco
>
> https://www.plugshare.com/location/174438
> sam's dfw
>
> https://www.plugshare.com/location/169417
> walmart sweetwater
>
> https://www.plugshare.com/location/171867
> walmart midland
>
> https://www.plugshare.com/location/169419
> walmart ft stockton
>
> A L3-50kW EVSE would be 1/3 the cost of buying a house. So, I'll back off
> on
> fantasizing having any L3-50kW EVSE in my front yard, and focus on L2 (3,
> 6,
> maybe 22kW).
>
> Using plugshare.com again but searching for j1772, there are only a couple
> available near the va hospital:
>
> https://www.plugshare.com/location/5766
> nearby L2
>
> The VA hospital is fed government, who (at this time) are not interested in
> providing EVSE for Vets or the hospital workers to use. So, if I could make
> my home EVSE parking spaces available (for break even fee), I could help
> EV-only driving Vets and va hospital workers.
>
> A few blocks away, there are 2 large apt complexes which plugshare.com
> does not show as offering EVSE to their residents. If I still had available
> spaces at night the VA Dr's Tesla's aren't using, I could offer them to
> those apt. residents for an overnight use fee.
>
> I made contact with my local sa utility, who seem interested in my offering
> EVSE
> https://www.cpsenergy.com/ev
>
> Obviously, there will be a lot of up front costs, I would have to begin
> small, recouping expenditures over time (depreciated assets) ...
> and the whole thing may not happen at all if I run into red-tape hurdles
> from city-hall (you never know).
>
> *** But if anyone is sharing their home EVSE, I would like to know their
> experiences.
> %
>
>
>
>
> For EVLN EV-newswire posts use:
> http://evdl.org/archive/
>
>
> {brucedp.neocities.org}
>
> --
> Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/
> ___
> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> http://lists.evdl.org/listinfo.cgi/ev-evdl.org
> Please discuss EV drag racing at NEDRA (
>
[EVDL] ?seeking EVSE-share experiences & advice
% Bottom-line/summary: I request feedback of experiences of sharing their
home EVSE.
Personal-status: I'm at the point where I am looking at buying a house in
the San Antonio (sa) area near the va hospital (this was the reason for the
move to Texas).
Willie has heard me talk of some of my (nutty-wackadoodle) ideas, so if he
is rolling his eyes right now, he's justified. So I ask, is the following
idea just another one of brucedp's wild-eyed pipe-dreams (w/o the pipe), or
could it actually happen/work (benefiting many, & I might just break even
after decade).
Almost everyone's house has lots of front lawn space here in TX ... Instead,
I thought I'd put cement parking in (cement does not need to be mowed). But
this leads to the next thought of utilizing that space.
Since there will be parking for a several cars,
Watt-If these parking spaces in my front yard,
were EV-only with EVSE? (I told you it was a wild-idea) ...
Being a charging nut, I used the free EVSE look-up tool plugshare.com , I
found there are VW-dieselgate $M funded electrify-america public L3-50kW
EVSE @a-few walmart stores
http://electric-vehicle-discussion-list.413529.n4.nabble.com/Walmart-Electric-Highway-tp4691970p4691973.html
These (below) are not online yet (under construction), but will have
multiple dual head (CHAdeMO ) L3-50kW EVSE
https://s3.amazonaws.com/plugshare.production.photos/photos/119250.jpg
cost: $1 session+ $0.30/minute. i.e. a used 22kWh Leaf pushing ~16kW over
a 20minute period would cost ($1+ 20*$0.30= ) $7. after 10minutes, there is
a $0.40/min idling fee as an incentive to leave. MC and Visa accepted:
https://www.plugshare.com/location/169448
walmart (northern) sa
https://www.plugshare.com/location/169604
walmart houston
https://www.plugshare.com/location/70717
walmart austin
https://www.plugshare.com/location/168277
walmart waco
https://www.plugshare.com/location/174438
sam's dfw
https://www.plugshare.com/location/169417
walmart sweetwater
https://www.plugshare.com/location/171867
walmart midland
https://www.plugshare.com/location/169419
walmart ft stockton
A L3-50kW EVSE would be 1/3 the cost of buying a house. So, I'll back off on
fantasizing having any L3-50kW EVSE in my front yard, and focus on L2 (3, 6,
maybe 22kW).
Using plugshare.com again but searching for j1772, there are only a couple
available near the va hospital:
https://www.plugshare.com/location/5766
nearby L2
The VA hospital is fed government, who (at this time) are not interested in
providing EVSE for Vets or the hospital workers to use. So, if I could make
my home EVSE parking spaces available (for break even fee), I could help
EV-only driving Vets and va hospital workers.
A few blocks away, there are 2 large apt complexes which plugshare.com
does not show as offering EVSE to their residents. If I still had available
spaces at night the VA Dr's Tesla's aren't using, I could offer them to
those apt. residents for an overnight use fee.
I made contact with my local sa utility, who seem interested in my offering
EVSE
https://www.cpsenergy.com/ev
Obviously, there will be a lot of up front costs, I would have to begin
small, recouping expenditures over time (depreciated assets) ...
and the whole thing may not happen at all if I run into red-tape hurdles
from city-hall (you never know).
*** But if anyone is sharing their home EVSE, I would like to know their
experiences.
%
For EVLN EV-newswire posts use:
http://evdl.org/archive/
{brucedp.neocities.org}
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Re: [EVDL] plusing charger controller
On 17 Mar 2019 at 16:39, ken via EV wrote: > I like to see some kind of a charger timer that could control the input > to the charger as on/off This is pretty much what a cycle dropping charge controller does. It's a relatively simple (crude) method. The charger is designed to produce a voltage higher than the battery's fully charged (on charge) voltage. The controller monitors the voltage, and shuts off the charger when it rises above some threshold (typically 2.35 to 2.45 volts per cell). With the charger off, the battery voltage then falls until it crosses some lower threshold (hysteresis), and the charger turns on again. This cycle repeats, usually for hours. As the battery works its way through its absorption phase, gradually the on time becomes shorter and the off time longer. This effectively tapers the average current as the battery reaches full. Normally the switching is done at the charger output, but I've seen one oddball charger where the charger INPUT (tansformer primary) was switched on and off. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] plusing charger controller
What would that accomplish? Sent from my iPhone > On Mar 17, 2019, at 4:39 PM, ken via EV wrote: > > From thoese of us with no bms HVC cut off, or top end shunts, or fragel > charging circuts or time of day.. I like to see some kind of a charger > timer that could control the input to the charger as on/offbut like > for varibale timing like1 min on / 10 mins off continusly maybe > some kind of adrilal program or settable timing modual . > > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
