EVLN: EV-newswire posts for 20180910

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EVLN: EV-newswire posts for 20180910

Electric Vehicle Discussion List mailing list


http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Wallbox-smart-tech-EVSE-es-expanding-sales2-uk-v-tp4691157.html
EVLN: Wallbox (smart-tech) EVSE.es expanding sales2.uk (v)
Wallbox expands EV charging to UK
4 September 2018  Spanish electric vehicle charging manufacturer Wallbox,
expands to the UK in order to supply its technology to the rapidly
developing market as well as simplify ...
https://industryeurope.com/downloads/3142/download/Untitled%201110.jpg?cb=02f665b7ae1049b8915f26dbb242f447&w=1032&h=


http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-DIY-Tesla-3-tow-hitch-utility-EV-champ-tp4691158.html
EVLN: DIY Tesla-3 tow hitch> utility EV champ
Tesla Model 3 tow hitch DIY installation turns electric sedan into a utility
champ
Sep 1, 2018  Tesla Model 3 tow hitch DIY installation turns electric sedan
into a utility champ ... tow trailers, carry bikes, and become an all-around
more productive electric car. ... Model 3's crash bar and replacing a couple
of metal plates with the tow hitch ...
https://youtu.be/7n77pvJuv8o


+
https://www.msn.com/en-us/autos/news/volvo-wheels-out-new-electric-mining-vehicle-prototypes/ar-BBMLUsf
Volvo Wheels Out New Electric Mining Vehicle Prototypes
2018-09-03  Volvo Construction Equipment together with its customer Skanska
began testing the viability of its Electric Site concept ...


https://www.forbes.com/sites/brookecrothers/2018/09/09/tesla-model-3-era-is-real-crushes-toyota-prius-others/#70c0289777f2
Tesla Model 3 Era Is Real: Crushes Toyota Prius, Others
Sep 9, 2018  The Model 3 now stands alone as one atop the sales chart for
the year with no other plug-in electric car capable of catching it. The YTD
tally so far stands at ...


http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVent-EV-rides-Harrigan-Centennial-Hall-1-3p-9-15-Sitka-AK-tp4691140.html
EVent: EV rides @Harrigan Centennial Hall 1-3p 9/15 Sitka-AK
Electric vehicles featured at Saturday Open House
Dave Nicholls, with the Sitka Electric Vehicles Owners, outlines plans for
an Open House this 1-3 p.mp Saturday, September 15 ...
https://kcaw-org.s3.amazonaws.com/wp-content/uploads/2018/09/180910_NICHOLLS.mp3?x41310


http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVcrash-SUV-ice-1-e-bicycle-0-Sonora-CA-rip-tp4691149.html
EV rides @farmers market NDEW 4-8p 9/13 Benicia-CA
Electric vehicles return to farmers market for Drive Electric Week
September 12, 2018  It is that time of year when one can expect to find
electric vehicles at the foot of First Street during the Benicia Certified
Farmers Market. For those who have been ...
https://goo.gl/maps/ercPg9dwoQr


http://electric-vehicle-discussion-list.413529.n4.nabble.com/JB-s-redwoodmaterials-com-EV-parts-reclaim-repurpose-cobalt-tp4691109.html
JB's redwoodmaterials.com EV parts?> (reclaim/repurpose cobalt)
Tesla CTO JB Straubel has a stealthy recycling start-up and it's expanding
into Nevada
Sep 6, 2018  ... which churns out batteries for electric vehicles and solar
energy systems ... how Tesla plans to recycle the batteries in its electric
vehicles and reuse the materials ...
https://fm.cnbc.com/applications/cnbc.com/resources/img/editorial/2018/02/07/104994114-GettyImages-176645520.jpg




For EVLN EV-newswire posts use:
 http://evdl.org/archive/


{brucedp.neocities.org}

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decreasing pack voltage

Electric Vehicle Discussion List mailing list
 I have a 85 volt system  that draws 120 amps at 55 mph, but want to lower
my pack count (I found brand  new cells ) but to do only top speed of 40
mph .

at 40 mph my voltage is 70 volts and 40 amps,  Am i asking a oboius ?  the
cells are 70 ah .

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Re: decreasing pack voltage

Electric Vehicle Discussion List mailing list
Ummm, actually you failed to ask a question...

The principle behind what you are talking about is that in an EV Volts X Amps is equal to Power (Watts) and it requires a certain amount of power to maintain a certain speed.  If you drop the voltage of your pack it will then require more amps to maintain the same speed.  In this case, it takes 85 x 120 = 10.2 kw to drive 55 mph.  If you lower your pack voltage to 70 then 10200 / 70 = 145.71 amps to maintain 55 mph.

This is the straight math.  There are other factors involved as well.  Can your overall system maintain 70 volts at 145 amps.  My guess is that it can because most of the components that people build EVs with work fine in this range, but it is generally harder on all of your components.

Without more specifics that is the best I can answer your implied question.

Damon

Damon
________________________________
From: EV <[hidden email]> on behalf of ken via EV <[hidden email]>
Sent: Thursday, September 13, 2018 11:18 PM
To: Electric Vehicle Discussion List
Cc: ken
Subject: [EVDL] decreasing pack voltage

I have a 85 volt system  that draws 120 amps at 55 mph, but want to lower
my pack count (I found brand  new cells ) but to do only top speed of 40
mph .

at 40 mph my voltage is 70 volts and 40 amps,  Am i asking a oboius ?  the
cells are 70 ah .

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Re: decreasing pack voltage

Electric Vehicle Discussion List mailing list
In addition a 70Ah battery should do 145 amps continuous with no problem. You might want to check the peak currents when accelerating

Sent from my iPhone

> On Sep 14, 2018, at 12:36 PM, Damon Henry via EV <[hidden email]> wrote:
>
> Ummm, actually you failed to ask a question...
>
> The principle behind what you are talking about is that in an EV Volts X Amps is equal to Power (Watts) and it requires a certain amount of power to maintain a certain speed.  If you drop the voltage of your pack it will then require more amps to maintain the same speed.  In this case, it takes 85 x 120 = 10.2 kw to drive 55 mph.  If you lower your pack voltage to 70 then 10200 / 70 = 145.71 amps to maintain 55 mph.
>
> This is the straight math.  There are other factors involved as well.  Can your overall system maintain 70 volts at 145 amps.  My guess is that it can because most of the components that people build EVs with work fine in this range, but it is generally harder on all of your components.
>
> Without more specifics that is the best I can answer your implied question.
>
> Damon
>
> Damon
> ________________________________
> From: EV <[hidden email]> on behalf of ken via EV <[hidden email]>
> Sent: Thursday, September 13, 2018 11:18 PM
> To: Electric Vehicle Discussion List
> Cc: ken
> Subject: [EVDL] decreasing pack voltage
>
> I have a 85 volt system  that draws 120 amps at 55 mph, but want to lower
> my pack count (I found brand  new cells ) but to do only top speed of 40
> mph .
>
> at 40 mph my voltage is 70 volts and 40 amps,  Am i asking a oboius ?  the
> cells are 70 ah .
>
> _______________________________________________
> UNSUBSCRIBE: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.evdl.org%2Fhelp%2Findex.html%23usub&amp;data=02%7C01%7C%7C95d6bc500de44a4d03b208d61a09f33a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636725027361552683&amp;sdata=Q%2Bs3sACO0XmugvJaLq6Z%2BnOZETq5XyaRU2g3q4zpNRg%3D&amp;reserved=0
> https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.evdl.org%2Flistinfo.cgi%2Fev-evdl.org&amp;data=02%7C01%7C%7C95d6bc500de44a4d03b208d61a09f33a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636725027361552683&amp;sdata=ZyYpltnHO%2BQNs9SdcJlIF5Z08nnon4Vu9ViJcLnxmQ8%3D&amp;reserved=0
> Please discuss EV drag racing at NEDRA (https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgroups.yahoo.com%2Fgroup%2FNEDRA&amp;data=02%7C01%7C%7C95d6bc500de44a4d03b208d61a09f33a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636725027361552683&amp;sdata=FxLPkagjqBQ%2B4xJz%2Fy8ZDgQPRaoJNcF8YlcaLl44cHs%3D&amp;reserved=0)
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