Nissan Leaf Gen3 inverter

Nissan Leaf/e-NV200 drive stack topics
Z600EV
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Joined: Thu Mar 24, 2022 4:13 pm

Re: Nissan Leaf Gen3 inverter

Post by Z600EV »

Kelju, Any updates on if you got your adapter board working in the Gen 3 inverter?
JamesWLG
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Joined: Thu Oct 28, 2021 9:42 pm

Re: Nissan Leaf Gen3 inverter

Post by JamesWLG »

Jestroman wrote: Thu Mar 10, 2022 10:40 am i was going to use those solderless joiners that you heat?
Those types of joiners are ok for use in military aircraft so go ahead just use a good heat gun with the wrap around attachment thingy to heat all round at once, and make sure the solder flows.
Alibro
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Re: Nissan Leaf Gen3 inverter

Post by Alibro »

JamesWLG wrote: Mon Mar 28, 2022 9:50 am
Jestroman wrote: Thu Mar 10, 2022 10:40 am i was going to use those solderless joiners that you heat?
Those types of joiners are ok for use in military aircraft so go ahead just use a good heat gun with the wrap around attachment thingy to heat all round at once, and make sure the solder flows.
A little inconclusive but pretty much sums up what I said earlier.
I need a bigger hammer!
Doig5710
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Location: Rangiora, New Zealand

Re: Nissan Leaf Gen3 inverter

Post by Doig5710 »

As a auto sparky who works on normal cars and builds race looms as well, please don't use these heat solder joiners, there rubbish, either crimp join it with the dual wall heatshrink or solder it with a soldering iron and heatshrink, these things will fail in the future making your life not very fun trying to find the cause of a dodgy signal somewhere.
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Dala
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Re: Nissan Leaf Gen3 inverter

Post by Dala »

OlegAzeo wrote: Sat Nov 13, 2021 7:17 pm my 160kw inverter installed on leaf 2014 gives max 145kw and 400A, why is that? changed the multiplier and there is no difference at the maximum current.
I too am struggling with the 400A limit with a 40kWh pack. I've seen screenshots from Leafspy Pro with 180kW (500A), so something is missing to get it to output more.

I tried to modify the available battery power ( LB_Discharge_Power_Limit ) message in 0x1DC ti 180kW, just like the 62kWh pack sends it, but it did not help.

Anyone here got any ideas?
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Dala
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Re: Nissan Leaf Gen3 inverter

Post by Dala »

I have concluded that we won't get further with raising power from 400A -> 500A without a native LEAF 2019 e+ EV-CAN log.

Anyone got one? :D
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Dala
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Re: Nissan Leaf Gen3 inverter

Post by Dala »

I got the logs! From an e+. Still no luck with getting 500A, but we are getting there slowly. I got a lot of fault codes cleared now that I know what to send on the bus.

Image

Before code:
Image

After code:
Image

I think that the reason we don't get 500A is due to having fault codes active. If I were writing automotive code, I would put the vehicle in some limp mode when fault codes are active. Let's see if we can get rid of that last U1000!
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eCRX
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Re: Nissan Leaf Gen3 inverter

Post by eCRX »

Go Dala Go! 👍👍

100%. Would be like asking for full power on an ICE with a major sensor fault. An ECM just won't allow it.
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Dala
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Re: Nissan Leaf Gen3 inverter

Post by Dala »

Thanks @eCRX , now I made some more progress, just two more codes to squash!

Image

I will update the inverter code on github once I get the last two ones fixes. The P318E in particular sounds quite bad; "Traction motor inverter is unable to receive the EV system CAN signal from VCM"

Either of the following statuses is observed.
• No impact to vehicle behavior
• Stops drive control of traction motor


So getting that one cleared is now top prio!
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Dala
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Re: Nissan Leaf Gen3 inverter

Post by Dala »

I finally got it 8-)

Now the code sends enough CAN messages to make the system believe everything is fine:
Image

I've updated the inverter code on Github: https://github.com/dalathegreat/Nissan- ... inverter.c
Warning, that code is r o u g h. I will optimize it later on when I know that it actually gives 500A now.

Now to continue with some error-free roadtesting....
Alibro
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Re: Nissan Leaf Gen3 inverter

Post by Alibro »

You're wasted on the likes of us mate.

What a star, well done. :)
I need a bigger hammer!
Letins
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Re: Nissan Leaf Gen3 inverter

Post by Letins »

thank you!
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SciroccoEV
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Re: Nissan Leaf Gen3 inverter

Post by SciroccoEV »

Do we know what the battery voltage limit is on the OEM Nissan logic board?

Also, from what I've been able to glean on-line, the 160kW inverter has a higher rpm limit and therefore top speed, than the 110kW. Can anyone confirm that this is the case and it's not different gearing.
Letins
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Re: Nissan Leaf Gen3 inverter

Post by Letins »

There is no gear, everything is hidden by the power plate inforce drivers above it. a logic board provides communication and monitoring through it with the ev control module, if the open inverter bard used is not needed
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