OrientExpress
Well-known member
It's more likely that it's the same ATM that the e-NV2000 has always had. That is some fans inside the pack.
Possible Widespread 2018-19 Traction Battery Quick Charge Problems
- Thread starter Evoforce
- Start date
Help Support My Nissan Leaf Forum:
kennethbokor
Well-known member
OrientExpress said:
Ah ha, yes most likely that then. Thanks for letting me know. If I find out something different, I'll post it.
OrientExpress said:
I agree. I don't see how they could refit the existing 40kwh pack for a liquid TMS that would do anything but cool the outer surface.
arnis
Well-known member
E-NV200 has a refrigerant based evaporator with fans. It's good enough for daily fast charging.
60kWh Leaf could actually use that with hardly any modifications to the vehicle body.
60kWh Leaf could actually use that with hardly any modifications to the vehicle body.
Evoforce
Well-known member
arnis said:
What is interesting, is that in my discussions with Nissan Corporate Executives, they didn't want to do that with their batteries because of condensation concerns within the battery pack.
Evoforce
Well-known member
SageBrush said:
Probably already have!
OrientExpress
Well-known member
More info on the Model3 tear down especially the battery
http://www.motortrend.com/news/tesla-model-3-teardown-deconstructed-3/
http://www.motortrend.com/news/tesla-model-3-teardown-deconstructed-3/
arnis
Well-known member
Evoforce said:
Tesla's solution is pretty complex and weight is significant.
Condensation shouldn't be a problem, battery is almost airtight.
Mitsubishi iMiEV actually blew AC air through the pack. Same air we get into the cabin.
And it worked fine.
There might be condensation on the exterior surface of battery case, but that
doesn't matter at all.
If I had to design a system, I'd have heat exchanger block (refrigerant to glycol) near the compressor and then
transport chilled glycol into convector(radiator) with small fan inside the pack with lightweight plastic
airduct to the rear. Leaf MUST have a fan inside the pack to stabilise temperature between cell modules better.
It works even without AC activated. And this system supports heat scavenging form the drivetrain.
Fan should be 120x120x38. Convertor 120x120x30...50 mm. This block will cost less than 100€ per vehicle.
Heat exchanger and control another 100€. Some piping...
And that one will be good enough for endless travelling. It should handle half of AC system capability.
Definitely enough for 70-80kW charging rate and works well in case of overheating chemistry.
EVDRIVER
Well-known member
- Joined
- Apr 24, 2010
- Messages
- 6,753
Joe6pack said:
I can tell you they know this is a huge issue but it's marketing's job to play it down. Have you ever talked to any of their engineers from Japan? I have spoken to several of them personally including the lead for the entire project. Do you really think Nissan thinks this is not a huge issue? Perhaps not in 2011 but they are not stupid or in denial. When they have TMS expect them to make that very clear with new marketing and PR.
tcherniaev
Well-known member
I just got off the phone with 877-664-2738 and I can tell you that at least they do not care AT ALL that the charge rates suck. They argue that it is normal and that Nissan does not promise any specific charge rate. I asked them why 2016 leaf pulls more power that 2018, and they could care less. Just like they did not care about 2011 leaf battery degradation until lawsuit was filed.
Oils4AsphaultOnly
Well-known member
EVDRIVER said:
They already have TMS ... on the e-NV200!! https://electrek.co/2018/04/24/nissan-e-nv200-electric-van-new-40-kwh-battery-pack/
"Interestingly, the battery pack is not exactly the same as the Leaf because Nissan actually includes an active thermal management system in the e-NV200."
As you've said, it's marketing's job to downplay the severity of the problem, but they most definitely are concerned about it.
SageBrush said:
This thread isn't about the battery. It's about quick charging. Nissan designed it to do exactly what they wanted it to do. Sorry it bothers so, but they will sell a crap ton of these things and no one will care about quick charging speed. To the average LEAF buyer, 22 kW on the second level 3 charge of the day will mean very little.
Oils4AsphaultOnly
Well-known member
tcherniaev said:
That's the Nissan North America customer support line. They're supposed to help you with issues like how to plug your car in, and how to pay your monthly lease payments.
When I asked them to put in a feature request to "bring back the 80% charge limit" on the 2016 leaf that was on my 2013 leaf, they told me that there was NOTHING they could do about it. If they could implement a smoother braking experience in firmware and put out a TSA for it (http://learnbyblogging.com/jerky-brakes-on-my-nissan-leaf-how-i-got-it-fixed-upgrade-the-app/), they could've brought back the 80% charge limit with little effort. The purpose of that customer support line is to tell you how to use the car within its limitations, nothing else. Not even to provide feedback back to corporate. It's not a reflection of the rest of Nissan.
OTOH, I put in a request that did supposedly get to Nissan Corporate. I asked about special ordering an SL with cloth seats. The response was that the SL was their 'top of the line car' and that if I wanted cloth seats I should order a loaded SV. This after I noted that Around View now comes only with the SL. They really don't care what customers think, or want, as long as we buy the cars.
WetEV
Well-known member
LeftieBiker said:
Mass production means a limited set of choices. Need to satisfy enough customers, not every customer. Do they care what you think? Not if you are not in the target group. Want to drive 500 miles days with 4 QC sessions? You are not in the target group of customers.
Similar threads
