Nissan LEAF Electric Motor Disassembly – Video

JUL 10 2014 BY MARK KANE 19

Nissan Leaf Motor Unit Disassembly

Nissan LEAF Motor Unit Disassembly

On the mikeatyouttube channel we find this Nissan LEAF motor unit disassembly video.

Three main components – the on-board charger, inverter and motor were disconnected, opened and separated, providing us some glimpses at how it all looks.

And there’s even earlier video before the process, with all the components on the wall – alive!

“A video on taking apart the three components of a 2013 Nissan Leaf motor unit.”

Nissan LEAF on the wall - alive!

Nissan LEAF on the wall – alive!

“We ripped out the components and wiring, battery and motor and pegged it out on a board. Then we got it running!”

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19 Comments on "Nissan LEAF Electric Motor Disassembly – Video"

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I think someone is building an EV MG ?

is that what the car is ?

donor totaled leaf plus a small sportscar
say a Miata or something and about 6 weeks of hard work…… EV sports car!

Hmmm. The motor seemed a bit heavier than I would have guessed.. but then again, that appears to be the whole transaxle too.

Dr. Kenneth Noisewater

I still wonder how much heavier and larger using a 2nd motor instead of a diff/transaxle would be, with a combined 2-inverter assembly.

IIRC, most old rear drive ICE ended up being essentially one wheel drive anyway, so why would even need it?

Dr. Kenneth Noisewater

Because power, torque vectoring, and free “limited slip” diff.

I think that what electric car needs is four 30–40 kW electric motors. I think that this is the cheapest configuration relative to weight, performance and value for EV drivetrain.

The cost and weight of electric motor is more or less directly proportional to its power, therefore I think that four electric motors gives better value than single electric motor.

Electric AWD is quite important step, because it increases the active safety of car in non-ideal conditions. And of course it is more fun to drive!

Don’t forget that 4 controllers would be needed and coordination between all of them for turning and such. Controllers are typically more expensive than the motors.

A filleted Leaf? How grotesque!

Hey guys who miss the mechanic greasy hands……..
Why the Left engine looks like ICE? I mean Tesla looks cleaner in design.

Dr. Kenneth Noisewater

Because it needs to fit in a shared platform’s hardpoints?

The LEAF is a unique platform. It is not shared with the Versa or any other Nissan vehicle.

When I went to a very early drive event for the LEAF, it was explained to us that they made the motor/inverter assembly look like a regular ICE car for familiarity reasons.

With very little to keep EVs front drive (like their ICE counterparts), I’m surprised that more EVs aren’t rear-wheel drive.

My guess: Rear drive is a packaging headache. You have to either put the motor in the rear, which will create cargo-intrusion problems even worse than Ford has with the Focus EV, or you put it up front and run a drive shaft through the most logical and convenient place to put the battery.

My understanding is that regenerative braking is more efficient on a front wheel drive car, since most of the braking occurs up front.

Having said that, I agree with Jouni that 2-4 rim motors seems like the ideal way to power an EV.

The Mitsubishi i-MiEV has rear-mounted inverter and motor, and has no cabin intrusion at all. The rear seats even fold flat. Packaging is NOT a valid excuse when such a tiny car does it correctly.

Front wheel drive is much safer to drive.

Tesla’s “motor” is simiar sized … the major size reduction in packaging is Tesla’s inverter and power electronics which are in same-size packaged as the motor. Nissan’s inverter is two big boxes stacked on the motor like engine cylinders and valve-train with manifolds box.

Having everything in a single box makes car assembly faster. Because Nissan makes the Leaf at the same pipeline as ICE cars, the assembly times for the steps must be similar too.

The unit even looks like a normal ICE engine at a first glance.

Front wheel drive cars are not safer in any way. Rear wheel drive distributes the weight better for better braking and handling, so really rear wheel drive aka correct wheel drive is much better than wrong wheel drive aka front wheel drive.