co2x3
Posts: 4
Joined: Tue Oct 25, 2011 3:13 pm
Delivery Date: 25 Dec 1973

life electric motor

Tue Oct 25, 2011 3:30 pm

I was planning on purchasing 2012 leaf. My main question is the life of the motor. As with all electrical motors they wear out. Any shelf life on this type of motor? 2 nd question how much are the battery cells to replace? the more I look at the engineering aspect of it I am lead to be leave that its a disposable car after 10 years of run time. Please any input would be appreciated. :o :|

User avatar
TomT
Posts: 10640
Joined: Sun Aug 08, 2010 12:09 pm
Delivery Date: 01 Mar 2011
Leaf Number: 000360
Location: California, now Georgia
Contact: Website

Re: life electric motor

Tue Oct 25, 2011 3:58 pm

The only thing in the motor that could even conceivable wear out in any reasonable amount of time is the bearings and I suspect even that would be far in to the future. As to the battery, individual cells can be replaced and as to what they cost, by the time you need them many years down the road it is likely they will be far cheaper than they are today...

I suspect that the technology will have changed so much in ten years that even if the car is still performing adequately at that point, you'd likely want to replace it. The same can be said for most vehicles, for that matter...

co2x3 wrote:I was planning on purchasing 2012 leaf. My main question is the life of the motor. As with all electrical motors they wear out. Any shelf life on this type of motor? 2 nd question how much are the battery cells to replace? the more I look at the engineering aspect of it I am lead to be leave that its a disposable car after 10 years of run time. Please any input would be appreciated. :o :|
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
2019 Model 3; LR, RWD, FSD, 19" Sport Wheels, silver/black; built 3/17/19, delivered 3/29/19.

DarkStar
Posts: 2066
Joined: Sat Jul 17, 2010 10:06 am
Delivery Date: 25 Mar 2011
Leaf Number: 568
Location: Hillsboro, Oregon, USA
Contact: Website

Re: life electric motor

Tue Oct 25, 2011 4:09 pm

co2x3 wrote:I was planning on purchasing 2012 leaf. My main question is the life of the motor. As with all electrical motors they wear out. Any shelf life on this type of motor? 2 nd question how much are the battery cells to replace? the more I look at the engineering aspect of it I am lead to be leave that its a disposable car after 10 years of run time. Please any input would be appreciated. :o :|

Since the only moving parts on the motor are the bearings, I would say that it will outlast your grandchildren. Nissan uses a three-phase AC synchronous motor instead of a typical DC motor that has brushes that wear out if not maintained (but are usually easily replaceable).

Officially, Nissan does not have a replacement price for the battery pack, however it will not be "broken" after 10 years. Over time, the total capacity of the battery pack will decrease, how much is up for debate, but it isn't like on day 3,650 all of the sudden you can't go anywhere anymore, it's possible that after 10 years the battery pack will have an 80 mile range instead of 100 miles brand new.
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association

User avatar
davewill
Posts: 5045
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: life electric motor

Tue Oct 25, 2011 4:13 pm

I don't think you have to worry about the electric motor. The life of the battery depends entirely on how you use it, and what level of degradation equates with "Time to dispose of this car" for you personally. We've had guesses from 10% to 30% capacity fade over 10 years.

Personally, I'm expecting to keep this car a long time. I take good care of my cars, and expect to renew the pack at least once and drive it for 15 or 20 years. I'll admit that's optimism and determination on my part, though.
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

User avatar
GeekEV
Posts: 1825
Joined: Tue Jan 18, 2011 4:11 pm
Delivery Date: 15 Feb 2011
Leaf Number: 0308
Location: NorCal, USA

Re: life electric motor

Tue Oct 25, 2011 4:16 pm

Most modern cars are considered disposable after 10 years... The battery is a valid concern, but nobody knows the cost because by the time you need to replace it technology should have advanced to the point where the price is considerably cheaper. As for the motor, I would wager that it will last considerably longer than 10 years, but even when it does go it should be considerably less to replace than a full gasoline engine would be at similar mileage.

2014 Chevy Spark EV 2LT
2013 Tesla Model S 60kWh[/url]
AV L2 EVSE + kWh meter
9.4kW Solar Array + enphase energy

LKK
Posts: 290
Joined: Sat Jan 15, 2011 10:27 am

Re: life electric motor

Tue Oct 25, 2011 5:43 pm

Industrial motors like the one used in the Leaf are often used 24/7 and last forever. Few moving parts, no brushes, benign operating environment they should last forever and when they do need maintenance, it will be for simple things like bearings.

DaveinOlyWA
Posts: 13880
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: life electric motor

Tue Oct 25, 2011 6:43 pm

i would not worry about the motor either. we had several when i work in box plant that had mean time between failure MTBF ratings anywhere from 500,000 to 750,000 hours which is essentially forever.

as far as battery replacement. i would have to lose a good third of my current capacity before i would consider any repairs. i hope that to be 10 years from now. by then the advent of EV charging (i hope by then all employers will have it which would double my range) should help me put off that decision even longer
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 15,000 miles, 478 GIDs, 37.0 kwh 109.81 Ahr , SOH 94.61, Hx 120.15
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

User avatar
ebill3
Posts: 1400
Joined: Fri May 27, 2011 1:23 pm
Delivery Date: 15 Sep 2011
Leaf Number: 7964
Location: Puyallup WA

Re: life electric motor

Tue Oct 25, 2011 6:52 pm

Interesting, I have never even thought about motor replacement. To parrot others, not a concern.

Battery? Maybe, but I think that is far enough down the road that I can't be concerned at the moment.

Bill
All electric - red LEAF, green Tesla S. No ICE.

User avatar
garygid
Gold Member
Posts: 12460
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: life electric motor

Tue Oct 25, 2011 9:58 pm

Didn't somebody report recently that it would cost the customer
about $600 (plus labor) to replace just ONE of the 48 Modules
at a Nissan Dealer (not under warranty)?

So, maybe $60 to $100 real cost per module now
($3000 to $5000 for just the Battery Pack's modules)?
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

User avatar
surfingslovak
Vendor
Posts: 3809
Joined: Mon Jun 13, 2011 1:35 pm

Re: life electric motor

Wed Oct 26, 2011 12:07 am

garygid wrote:Didn't somebody report recently that it would cost the customer
about $600 (plus labor) to replace just ONE of the 48 Modules
at a Nissan Dealer (not under warranty)?

Yes, I believe that this number was based on Andy Palmer's interview with the London Times in the wake of the Top Gear stunt earlier this year. In any case, I put this figure into a report I prepared for the September SF BayLEAFs meeting, and perhaps that's what you were referring to.

Andy Palmer, Nissan Great Britain senior vice-president, reportedly told the news outlet that replacing a single module in the Leaf's 48-module battery pack would cost £404 ($662 US).

Return to “Engineering”