Re: [EVDL] EV Grin doubled

Nice story! New EV’s are almost boring already  No tinkering. Taking older Leaf to -25C and for a longer road trip is a time machine to SLA era. Oh that pain with 30-40 mile range. Not in too distant future we’ll have 1000 mile range EV’s. That’ll provide some more of that EV grin. Interesting

Re: [EVDL] Battery breakthrough?

t; reduced. Molecules can always arrange themselves lots of different > ways...good and bad. > > Where is a good source for literature about such things battery related? > (especially Lifepo4 related) > > You'd think this was a highly important subject. > > > > On Wed

Re: [EVDL] Battery breakthrough?

Solid electrolyte can basically last ”forever”. So this is not actually ”news”. :) Reason why cells go broken today is the liquid electrolyte and passivation layers it needs. Function of time and temperature and voltage. In theory LFP cell with solid, e.g. cellulose, electrolyte can provide

[EVDL] Charging payment system costs. Was: BYD Blade

kirjoitti: > On 30 Mar 2021 at 0:56, Jukka Järvinen via EV wrote: > > > The transaction and authorization volume is not there. > > I think that it needs to be as easy to charge an EV as it is to fuel an > ICEV. > > I can't imagine that any ICEV driver would want a wa

Re: [EVDL] BYD Blade

The Blade Battery is a really neat approach to add structural support to the pack and it is a few steps away from what I am doing. :) The new Blade cell dimensions do really help on the mechanical support but it also allows manufacturing methods which are more relaxed. They still do foil coating

Re: [EVDL] BYD Blade

battery as long as the system is isolated from the grid (in Europe). I bet ERCOT would love to have 20.000 1MWh charging stations with a PPA. That would allow all free charging.  -Jukka ma 29.3.2021 klo 23.37 EVDL Administrator via EV kirjoitti: > On 29 Mar 2021 at 22:46, Jukka Järvinen via

Re: [EVDL] BYD Blade

I heard Tesla SC is going to be open in Europe to all cars. I’m not sure if it already has happened. So this might not be true anymore: ”All that being said, Tesla still only lets Teslas charge at Superchargers in Europe even though they use the same plugs as everyone else; other EVs are blocked

Re: [EVDL] List down?

Looks like the discussion is going vivid on other mainstream mediums such as FB. A lot of EV pioneers are spreading the gospel there as common people are asking questions and support. More and more people are getting their first EV experience and there are a lot of questions to answer. Which is

Re: [EVDL] Zilla 1141 error - 15mV drop across contactor at 100A

High power demand under acceleration could indicate current leaking to the motor hull and messing up the car chassis ground (?) Brush dust issues have kept me troubled too many times with weird problems. -Jukka to 3. syysk. 2020 klo 13.01 Matt via EV (ev@lists.evdl.org) kirjoitti: > Hi Brains

Re: [EVDL] Orion BMS site

DNS resolves now from here too. :) Darn those GRU cyberwarriors! Tampering my browsing experience... -Jukka ti 18.6.2019 klo 19.11 Gary Krysztopik via EV kirjoitti: > Works for me and they have been very responsive. > > On Tue, Jun 18, 2019 at 2:42 AM Jukka Järvinen via EV > wro

[EVDL] Orion BMS site

Hi all. What's going on with the orionbms.com site? I could not access it. Says it's unreachable. Is this company alive still? I know it's not easy :) -Jukka -- next part -- An HTML attachment was scrubbed... URL:

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

Yes. Still few people understand about li-ion. The main thing to understand is there is so many different ways to make them it is quite impossible to know enough to make any general assumptions. There’s maybe less than dozen people in the world who can say anything in general. I can only say I

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

Unknown future problems? What are you referring to? This is well documented failure mode. That is the very reason of having the fuse there. :) It is not due manufacturing defect. Empirical evidence is empirical. One has to see it with own eyes. It does not mean it is in public domain. Most

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

You're absolutely right. Tesla has hired plenty of talent and they are driving the cost down with vehicle designs. That said they cannot compete in ESS with their existing design. They have now a chance as the grid side compensations are pretty high and investments are paid back in about one year.

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

Hi guys. Since tZero the small-cell-paralleling has been driven by costs and the search for benefit of scale. During those days there were not so many ”large” cell format producers and the cost efficiency was not even close to laptop cells. We were even looking in all kind of folding methods and

Re: [EVDL] Shorai LiFePO4 LFX36L3-BS12 Longevity Reviews

There's so many different ways one can make LiFePO4 cells so it is hard to say what goes with each cell we get. In general and from experiences accumulated so far it is very rarely the case where LFP would die on your hands suddenly. Anything might seem sudden if you're not monitoring the

Re: [EVDL] Tesla battery fire?

Nice! I saw only the videos from the start until the fire persons came to scene. Someone commented the car was completely destroyed. But very good if the design worked as planned. Is there some kind of flame thrower nozzle at the size of the car? (If yes Mad Max points +1) I would still prefer

Re: [EVDL] Tesla battery fire?

Most likely an assembly error which slipped through inspections. Loose connections or broken bolts. Anything can and does happen. One can expect Tesla to identify and fix the problem. They've done so every time as far I know. Tesla could put a gap between the car and the battery so one can cool

Re: [EVDL] EVLN: Ultra-capacitor_li-ion hybrid> crazy-fast 20s charging

The surface area of li-ion electrodes are already on the next level. Only the mechanical design of cells and specifically the current collectors are slowing us down in the development. That'll pass soon. We rather avoid foils as current collectors. So 1990's. We did not understand even 5 years

[EVDL] Scalable cabling and charging system from Finland

Hi all dear EVDL friends. Thought you’d all appreciate to know how we solved the home and office charging issues here (Finland). This is probably something quite different what you’ve seen so far. Aim is to have electricity on all parking places with excellent cost efficiency. Actually I think

Re: [EVDL] Self discharge never sleeps (was: Curtis 1238-6501...)

Administrator via EV <ev@lists.evdl.org> kirjoitti: > On 9 Aug 2017 at 20:18, Jukka Järvinen via EV wrote: > > > This is why SOC windowing was developed. > > Could someone please explain what SOC windowing is and how it works? > Thanks. > > David Roden - Akro

Re: [EVDL] Self discharge never sleeps (was: Curtis 1238-6501...)

This is why SOC windowing was developed. To compensate the 'death rate' among the cells in the pack. Works with high voltage chemistries but with LFP and LTO one must do 'other stuff'. -Jukka ke 9. elokuuta 2017 klo 22.01 Bill Dube via EV kirjoitti: > Self discharge has an

Re: [EVDL] Electric compressor for EV+Battery heating (heat pump)

What do you consider 'a very cold area in north europe"? Easy advice for batteries: Insulation, insulation, insulation. :) For cabin one can direct charger cooling fan to circulate air over night. Most important is to keep moist out as people tend to cloth themselves during beach weather (-10C)

Re: [EVDL] Anyone interested in 2015 Leaf drivetrain or interior/exterior/suspension parts?

I do not have the exact dimensions of the enclosure. Has someone made .dwg out of it? I would like to figure out if the old enclosure is usable for upgraded pack. Most likely outcome is we will need to make the packs completely and just make sure the connectors and joints fit. The old BMS master

Re: [EVDL] Anyone interested in 2015 Leaf drivetrain or interior/exterior/suspension parts?

Thanks Cor! I will check what are the options to ship one set covers here. Last time I sent something from here to there about same size and weight was only about 300€. We can use the other set to upgrade one car in there if you're OK with that. Just hold on to them. I think I could have one

Re: [EVDL] Anyone interested in 2015 Leaf drivetrain or interior/exterior/suspension parts?

How much for the battery enclosure with external connectors? I'll build upgraded pack inside it (60-80kWh). -Jukka to 19. tammikuuta 2017 klo 7.56 Cor van de Water via EV kirjoitti: > I am involved in trouble-shooting a pickup truck that is converted with > > a (2013) Leaf

Re: [EVDL] 2nd life for lithium batteries

Yes. You're right about Edison cells. And the problem is the losses and requirement to flush the cells every 1000 cycles. The losses and flushing makes it 2x more expensive to own and operate compared to say Winston cells. We've done the math extensively and used the real life numbers from vast

Re: [EVDL] 2nd life for lithium batteries

Battery manufacturers are vertically integrating their business from raw material production to service (€/MW/MWh fee). We design cells for easy recycling and optimize the cells to provide maximum MW/MWh in and out. This is 10.000bn€ business opportunity as service. Today. Less if just selling

Re: [EVDL] 2nd life for lithium batteries

Rarely what one can get for free is useless. People even sleep in cardboard boxes. So is the idea to push forward the responsibility to recycle? This is no business per se. If something it's just smarter use of existing resources. What it comes to better electrolytes.. that is HARD! The testing

Re: [EVDL] 2nd life for lithium batteries

Usually the internal resistance is growing much faster than the loss of capacity. So if you use the pack in very low power application you will be able to use the pack for some time (several years). This is for LCO, LMO and NMC. Maybe NCA too (cannot say for sure yet as I do not have usage data

Re: [EVDL] Which one china lifepo4 60 Ah?

Why NMC/LMO/LCO over LFP on OEM EVs? Due the cell cost. LFP base patents are still valid for few years while others are free game. Sometimes I feel they also wanted to make shitty solutions to prove EVs are no-go. You just got to love how Tesla is wiping floor with those arrogant a*#%¥£es. :)

[EVDL] Canadian EVDL members

Hi all. I'm pushing one of my startups to Canada. It's about EV charging. I would like to ask all Canadian EV users to help me with some research about the charging infrastructures at home. Specifically outlets and voltages are in interest. Please send me off list some information what kind of

Re: [EVDL] Ground Faults

This leakage issue has to be resolved ASAP. It's pretty serious thing if our cell cases create bridges to chassis. Please send me all data of these cases. -Jukka President in Europe TSWEG torstai 2. kesäkuuta 2016 Lee Hart via EV kirjoitti: > Cor van de Water via EV wrote: >

Re: [EVDL] French man electrocuted while trying to steal petrolfrom an EV> a burning smell was noticed

:D It was funny to us but people who are not so educated about EVs may believe this kind of junk. I've seen laws being prepared on BS like this (or is there other way? :P ). In theory if the vehicle was a conversion with non-steel battery compartment and had unisolated charging procedure

Re: [EVDL] Hotel Chargers

Call the hotel and ask if they have electricity in the building at all. :D Why it has become so hard to get a charge? Everyone on this EVDL know there is no real technical issues with this. Here's a fun detail for you to talk about over EV dinners: We have already close to *two million* charging

Re: [EVDL] EV Question

1) I think the standards are still a nutty mix and therefore there is no general guide. I think all EV's come with manual which tells thing or two about charging. 2) In general you do not park to any charging post if not charging. It's part of the 'EV code' and a polite thing to do. You adjust

Re: [EVDL] EVLN: Slower bartender's method crams 0.7% more charge into li-ion

Good news if they have been able to pinpoint and remove accurately their side reactions from their cells. What to do depends greatly what kind of cell it is. Chemistry, particle mechanics, layer thicknesses, age, etc... But in general stuffing anything in anything has to be done with knowledge.

Re: [EVDL] [SPAM?] Re: EV4Sale: $2500 '02 Focus conversion-EV, needs 144V pack r:40mi ts:75+mph

Elcat's have 72 or 78 volt packs and Curtis controller. There are some pots for adjusting at the side of the controller. I've used 24, 25 and 26 cells in conversions from SLA to LiFePO4. TS 400Ah cells are enough for a small EV like the Elcat is. http://ewww.evalbum.com/4690

Re: [EVDL] UK grid too weak for 34M EVs (not when we stop pumping gas too!)

I saw one graph which stated the energy usage for oil refining to gasoline. It's stated 23g of CO2 for each driven kilometer just for that part. With our mix on electricity there was 19g of CO2 per kilometer on EV. From this one could derive that producing gasoline solely is already consuming more

Re: [EVDL] A math formula can model li-ion pack aging, Pyrite pack

The elevated temperature for Li-ion performance was known method at NEDRA PIR and Wayland invitationals like 10 yrs back. I was there and I kept telling this what we saw in our cell tests back then. Higher death rate too. NMC cells from TS at that time could be preheated with high current charging

Re: [EVDL] Big-Electric Shocks Big-Oil

Until the stored kWh cost is 1 or 2 c. The grid is much more complex system which has idling cost. Home battery with 20yr life expectancy and $100/kWh price tag is pretty hard to fight. The future might hold home appliance infrastucture which has batteries everywhere. Starting from lights and

Re: [EVDL] Securing your portable L1 EVSE

I have to wonder again how in earth have we survived so many decades without those boxes? How many died or got a shock? Luckily we are getting back to the easy life as the cables will be 'dumb' again... all that smart stuff will be in the car and in the socket. -Jukka 20.10.2015 17.24 "Bill Dube

Re: [EVDL] When testing DriveNow hire service, we IMMEDIATELY crashed their i3 EV

I have a strong feeling Tesla is actually going for this car-as-service route with their Model 3. It might not be even a 'new' car which can be bought. Instead it could be just modified/stripped Model S with autonomous driving. But this is just my guessing as this would be something which I would

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

I think there is an opening for this niche light vehicle market. It just has to be taken with extreme measures. If one could build that economic bullet-shaped Kevlar-Carbonfibre-Ceramic-nano-nano-nanotube car which would prevail on head-on collision with semi-truck... If it's light and beats the

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

That is very true. It's 'cool' to drive EV's nowadays. They're fun and quick but also safe. That fame is all thanks to Tesla. But for some reason NEDRA did not achieve the same results while it was quick and fun. Too nerdy to be associated to? It seems to be a combination of many things while

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

AH! But our conversions were always compromises as the new technology did not fit nicely anywhere. Light vehicles are OK but majority of people do not think that way. They require 'safe' cars and that's what sells. It would be far more better if everyone worked from home and only walked around the

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

I think it's more important to think how the user benefits from the battery sizing. While it might sound irrational to have 150kWh onboard it would enable stressless driving with longer useful lifetime. The vehicle it self will have better resale value as it remains more usable even after 10 or

Re: [EVDL] Bu's e-wheely bad idea weaving-recklessly the wrongway HT delivery

When the comparison is done fair we should look what the electric bike replaces. We should not compare unaided bicycles to electrically assisted ones. In China many electric bicycles are much sturdier than ones without electric assistance. So one can zip away on the streets with the bike and 3

Re: [EVDL] Bu's e-wheely bad idea weaving-recklessly the wrongway HT delivery

No. I'm saying there were tons of gasoline powered scooters and motorcycles in the cities in China (like Shenzhen). Now they have been replaced by electric scooters and electric bicycles. The electric scooter is usually with SLA batteries and weights about 120kg (270 lbs). The electric bicycle is

Re: [EVDL] Bu's e-wheely bad idea weaving-recklessly the wrongway HT delivery

I bet this guy did not even know he was doing something wrong. As this is standard procedure on many Chinese cities. :D Most get away without a single scratch as everyone knows bicycles are everywhere. Which is exactly the opposite situation in most US cities. Right? The thing to observe here

Re: [EVDL] EVLN: 800kWh Saft Battery for Lochinvar Electrified-Ferry

FYI The 1st two ferries before this was made with cells and battery packs from finnish European Batteries. -Jukka 18.7.2015 11.05 brucedp5 via EV ev@lists.evdl.org kirjoitti: http://insideevs.com/saft-provide-800-kwh-battery-electric-ferry/ Saft To Provide 800 kWh Battery For Electric

Re: [EVDL] EVLN: Tesla's new weapon is a battery scientist @dal.ca

And the most important part of this news was: “I had to be a part of it,” says Dahn. “It’s the next step.” And also the reasoning why he said this. -Jukka http://www.google.com/profiles/jarviju#about 2015-06-24 13:16 GMT+03:00 Michael Ross via EV ev@lists.evdl.org: Yep. On Wed, Jun 24,

Re: [EVDL] EVLN: What if 2011 LEAFs were Retrofitted to 2016 Range?

I wish we could have all interface details so third parties could offer battery upgrades to old Leafs and other OEM cars. Now we just have to hack through vaquely documented protocols and sink more RD to it. Eventually the packs will be available anyway. I know dozen reason for OEM not to supports

Re: [EVDL] pouch cells

Sounds like LTO cell to me. Not standard LMP or LCO. Maybe some LiFePO4 variant. That spec tells it cycles well which is nice for such use. EV is not one of those applications. Nothing new under the sun I'd say. -Jukka http://www.google.com/profiles/jarviju#about 2015-05-12 5:56 GMT+03:00 Bill

Re: [EVDL] Cold Charging Lithium Experiences

Bill wrote: I think it is important to not group all Li-ion in the same basket. And that is the right answer. Ask your cell manufacturer for the specifications. Joggling with the electrolyte mixtures is what people do so you really cannot say anything generic. For sure it's better for the cell

Re: [EVDL] 4 to 12 Cell Lithium BMS

FEVT ltd used latching contactors from Albright. http://www.albrightinternational.com/files/downloads/catalogues/SW80%20ETC%20TELECOM%20LEAFLET.pdf You need to add a latching circuit when operating with low level BMS systems. When BMS keeps the contactor ON/pulled there is very little energy

Re: [EVDL] Tesla might Supercharge EVs to regain 400mi in 15min for 7 credits

The range is currently the issue which requires more quick charging stations. But this issue is going away now. More range is going to be on every BEV as the production methods improve for li-ion. Also packaging is getting whole lot better from current cells and packs (talking about active

Re: [EVDL] Speaking of General Jack Ripper (and thereby 'How I Learned to Stop Worrying and Love The Bomb')

Maybe they just filled up their tanks and are feeling ill-equipped... 21.5.2014 17.51 kirjoitti Robert Salem via EV ev@lists.evdl.org: Where do you live ?? On Wed, May 21, 2014 at 10:02 AM, Geoff Pullinger via EV ev@lists.evdl.orgwrote: Has there been some news story I've missed in the