VW eGolf hardware

[arber333]

Hi all. This weekend i borrowed eGolf 2019. Mainly because i wanted to find out if i can connect to CAN bus and record msg.
I found out it uses very nice liquid cooled and small charger. It can produce 7.2kW, but it is not single phase. It actually uses 2 phase charging. I checked with my clamp meter... 14A per phase. This is very good for European housing where 3phase is common. This leaves a remaining phase for house consumption.

VW eGolf charger 5QE915681B or N

Also i found a lot of other VW hardware is available online:

VW Passat inverter 3G0907070B
VW Golf inverter 5G0907070H
VW eGolf inverter 5QE907070

VW Golf hybrid charger 5QE915682K

Did anyone consider getting VW parts? Can we get to the CAN IDs?

[Sloth]

Yes, I was thinking about VW oem charger, you can get 5QE915682K less then 100eur. But I didn't find any useful information on the net and my CAN hacking skills are inefficient to tun it by myself.

[clanger9]

Very interesting little unit. Are there any specs for 5QE915682K? It's from a hybrid, so presumably limited to 3.6kW?

[MiBa]

Hello openinverter-enthusiasts,

I have the eGolf Inverter on my workbench

OEM-No.: 5QE907070 / 5QE.907.070.A

Vendor: Bosch INVCON 2.3

Rated @85kWp

I’m still in a very early test-phase together with a
Bosch SMG-180.

This is a high efficient 12Pole PMS Motor in an IPM style.

29,2 kg

conservatively rated @ 80kWp mech

max. 12.500rpm

max. 400Arms

Motor-Feedback is a 6-speed high precision Multi Coil Resolver from Tyco Electronics (customized for Bosch only)


So what’s inside the Inverter ?

Three halfbridge IGBT’s from Bosch, 600A rated, Type: MH6560C

Datasheet: https://www.datasheets360.com/pdf/8193944722297093682

A DC-BUS_Cap from Epcos.

A 2,5kW DC/DC
etc.

I’ve made some pictures.


Regards
Michael

[tom91]

I did some reverse engineering of this inverter. Did not get beyond designing a adaptor board, with some clearance issues to a johannes V3 board.

I had just a few signals left to sus out, had control over each of the IGBT sides.

All info on github : https://github.com/tomdebree/VW-GTE-Inverter

[arber333]

I did some reverse engineering of this inverter. Did not get beyond designing a adaptor board, with some clearance issues to a johannes V3 board.

I had just a few signals left to sus out, had control over each of the IGBT sides.

All info on github : https://github.com/tomdebree/VW-GTE-Inverter

Nicely done Tom. I will look up your design.
I noticed several sets of GTE controler and controlers for EGolf for good price and they look very much the same.
Since i know Ampera uses 115kW motor and it has 15mm2 phase cables, EGolf and GTE use 25mm2 for 85kW motor. So inverter despite its small size has to be very similar for both.

And DCDC inside is a bonus too.

[clanger9]

Excellent info, thank you!

[arber333]

I had just a few signals left to sus out, had control over each of the IGBT sides.

Which of the signals you didnt use yet? I may try to find them out.
I could use your mapping to design inverter with Lebowski brain. It uses 3x current sensors for FOC. Voltage isnt an issue there, also temperature sensing. Fault pin would simply be wired to reset.
How are the IGBTs triggered there? You need a low signal or high?
Also chip clearance wouldnt be an issue with Lebowski.
And of course Bas just put his code online as full open source!

[damian.lo]

Do You knows maybe in which cars Bosch SMG-180 motor was assembled? In e-Golf I saw it was, but elsewhere?
I found that VW chargers 5QE915682K are really cheap, so maybe also I will buy this and put on shelf
Maybe in future someone smarter will know how to use this.

[tom91]

I had just a few signals left to sus out, had control over each of the IGBT sides.

Which of the signals you didnt use yet? I may try to find them out.
I could use your mapping to design inverter with Lebowski brain. It uses 3x current sensors for FOC. Voltage isnt an issue there, also temperature sensing. Fault pin would simply be wired to reset.
How are the IGBTs triggered there? You need a low signal or high?
Also chip clearance wouldnt be an issue with Lebowski.
And of course Bas just put his code online as full open source!

Luckily some clever guy took good notes. its is now a year a go I worked on this. Got this inverter from Zero-EV, however we decided it was no commercial use/did not fit projects we had so I stopped working on it on the side.

Currently the Isolated feedbacks and temperatures are unknown and the current ratios, but all pins for the current sensors identified.

[arber333]

Luckily some clever guy took good notes.

Kudos to you Tom!

Currently the Isolated feedbacks and temperatures are unknown and the current ratios, but all pins for the current sensors identified.

So i will let the hot water in and measure the resistance then... the same way i did for Ampera inverter before John Kelly sent me IGBT datasheet.
I couldnt find the NTC beta in the datasheet for MH6560C.

[muehlpower]

I have an air conditioning compressor from a Passat GTE. That should be the same as in E_Golf and Golf GTE. It is available from € 100 and is controlled by a LIN bus. So far I haven't been able to figure out what to send. The boudrate is 19600. Does someone have a car where to read the signal?

[arber333]

Currently the Isolated feedbacks and temperatures are unknown and the current ratios, but all pins for the current sensors identified.

Hi again!

I manage to get one VW inverter here. Its so small!
I managed to open it up and i see the brain board gets its signals from the big connector on the side. So your idea was to replace its brain with your own master board. I would ask three questions, though i dont mean to imply the fairytale...

First question Tom91; why does it need isolated power supply?
Next question; Is there only one isolated supply or more required?
Third question; did you figure also the pinout on how to start the DCDC 12V converter? Any info on its connector pins? I see it is also ERNI 1.27mm 8P connector no. 284699.

So my plan is to build my interface board and try to use gen2 controler to drive a motor first with 60Vdc. Then i will try to make DCDC obey.

A

[tom91]

I manage to get one VW inverter here. Its so small!

First question Tom91; why does it need isolated power supply?
Next question; Is there only one isolated supply or more required?
Third question; did you figure also the pinout on how to start the DCDC 12V converter? Any info on its connector pins? I see it is also ERNI 1.27mm 8P connector no. 284699.

That inverter looks different then the one i had.

No it does not, it is the supply to the optos and isolators. Check the schematics.

No isolated supply, just 5V as far as i know and then a supply in of 20V (atleast that worked for me.

It is painful to get working right i remember that much. It takes 12-20V then creates the isolated supply from that.

No idea on the DCDC.

I would say there is quite some figuring out left to do, I should have disassembled the whole inverter and powered it on to try and intercept the signals to the power stages to check my findings.

[arber333]

I would say there is quite some figuring out left to do, I should have disassembled the whole inverter and powered it on to try and intercept the signals to the power stages to check my findings.

I think i will do the same and trace the outputs vs your results. Hopefully they used the same layout.

I have here 50Vdc battery and also one 10A power supply that can supply enough current to turn my small ACIM motor.
It seems that it would be better to abandon the side connector and make a new cover from the front in which to mount a new board. Space is tight...

Do you have some photos of that inverter board? Maybe i can catch some similarities.

[tom91]

VW GTE test setup, dont mind the mumbling idioot.



So to get the isolation side to work you need to generate a 12-20V supply and then a pwm signal to start generating some voltage. there is a feedback output to indicate the isolated side has power.

Pictures of the brick i have and done the testing on, now its just down to getting it working really. Designed the PCB so I can use the Johannes brain to drive the IGBTS while the other signals and unkowns are on the screw terminals.

[tom91]

Dug out my setup, need to do more testing and documentation as now I do not know how to get the correct voltage on the isolated side and igbts switching.
Hope to get some done in the coming days.

[sprocketman]

Hi,

Just bought the Golf Ev charger. Has anyone looked at this?

[arber333]

Anyone has any info on VW inverter and charger wiring from Golf GTE? HV and LV connector pinout would be appreciated.
I have them sitting here not doing their thing and that frustrates me .

[golfdubcrazy]

Hope this helps.

[arber333]

Hope this helps.

Wicked! Thanks. I will try it from here then. Should be getting some CAN msg from charger.

[noturbolader]

https://www.facebook.com/groups/1704678 ... ?ref=share

[robotarmy]

Hi,

I just picked up one of these inverters.

I think (on a Google image search based hunch) that it could be the same as the PIM in a fiat 500e.

I'm interested in a few things to do with that car in particular:

1) I'd love to add some sort of DC fast charge to it, so one option might be to tap into the connections for the battery at the inverter.
2) if the inverter in the fiat dies, or reports an issue, the fiat equivalent part number is $5k, whereas these inverters can be found much more cheaply than that. It'd be great to know if the only change required would be software
3) general interest, and a pipe dream of adding rear wheel drive to my 500e to make a 4wd beast.

Loving the resources posted so far. Thanks all who've submitted info.

[Bigpie]

DomT177 has taken logs from a GTE https://github.com/DomT177/GolfGTE might be useful with the egolf bits.

Currently trying to trick my GTE battery into thinking its on charge to discover the balance command.

[tom91]

DomT177 has taken logs from a GTE https://github.com/DomT177/GolfGTE might be useful with the egolf bits.

Currently trying to trick my GTE battery into thinking its on charge to discover the balance command.

How much of the DBC is known? Can you capture some internal canbus for me?

I would suggest just putting charge into the pack to push the cells to near full and observe the canbus.