Romale wrote: ↑Tue May 23, 2023 11:08 am I have achieved excellent results with the Honda ima inverter + O.I. board v3. if anything, I can tell you.

Thanks,
I'll probably pester you at some point about that as I've got a couple of IMA inverters.

Romale wrote: ↑Mon May 15, 2023 2:00 pm what happened to this project?

I've had a few personal issues that have prevented progress.
It's still sitting in the project room just as I left it.
Hopefully I can get going on this project sometime soon.

Lastly it was removing the other auxiliary parts and stuff from the battery case.

PC210466.JPG
The Main contactor and bits.


PC220483.JPG
All the useful bits removed and ready to be re used.

2 x Panasonic AEV14012 M17 relays
AEC51012 Relay for the heater
450V 360A Fuse
450V 30A Fuse
850V 1 ...

The next task was getting the main battery module out from the enclosure.

PC090302.JPG
After removing all the base bolts the main power cables and the BMS module (which was a bit tricky) the main battery block was removed.

PC090303.JPG
The cells are bonded to heat exchanges in banks of 22s ...

I managed to snag a Mercedes C350e Battery for £100 last month described as Spares or Repairs with internal fault but the cells are OK and a £100 starting bid. :D

I've seen a lot of these for sale and thought a detailed tare down would help anyone thinking of getting involved with them ...

It is live now if anyone is interested. Normally they are available about a week or so after the event
I've probably fluffed up a load of facts and figures but who's to know.

Thanks for putting that link up, I missed them publishing the edited talks.

I was going to be attending MCH2022 hacker camp in Holland this weekend but caught Covid instead.

There is a 30 min talk tonight called "How to charge your car the open source way with EVerest"
I have no real idea what they will cover but thought I'd spread the news.
22:40 - 23:10 (Dutch time ...

In light of Damiens recent Patreon post I'm so glad this was my closing slide.
I'll post a link to the video of it when they get around to uploading them all. The live-streaming was unreliable on the day.

I've got a slot in the schedule for Sunday afternoon 4:30pm to 5pm UK time.
This time slot has the potential to change.

https://www.emfcamp.org/schedule/2022/49-how-im-building-my-monstrous-electric-motorcycle-from-hacked

The presentation will most likely be live-streamed if you want to see my ...

The vinyl stickers turned out well.
A friend runs a business and although I didn't get much discount I got them delivered quickly. The font was tweaked a bit to get it to fit in a round sticker.

That's interesting.
Do you have a link to that forum? I don't appear to be having sensible google results.

If I had more time I'd consider making a breakout to the Openinverter STM32 system.

Thanks Johu,
I'm investigating having some stickers of the logo made up to have available for the talk if that's OK.

I'm presenting my motorbike project at EMF hacker camp this year which is being held on Jubilee weekend 3,4,5th June.
The project is still very much unfinished but there's a lot to talk about and my plans for using reappropriated EV and hybrid parts.
As such I'll be heavily mentioning Openinverter ...

Hi,
I use Kicad and an adapter board shouldn't be that taxing.
Also a good opportunity to give something back to the project.

I can send / post up photos of past work if needed.

well sure, if you're all into that precision stuff...


The rest is probably going to be a bit more of a lashup. But not as bad as my ratbike projects ;)
I just wanted to be sure the shafts were in alignment so did the best can do in the home workshop. I've also seen engine / gearbox combos fail ...

...what gets hooked up where to the driver board.


I've got this pinout for the standalone IGBT you're got from https://www.diyelectriccar.com/threads/looking-for-connector-ima-inverter-pin-out.183690/
I've successfully controlled one from an arduino with direct connection from the arduino pin ...

Finishing and welding the adapter plate.

P3230463.JPG
Mounting nut head clearance holes hole. Cut on pillar drill.

P3230474.JPG


P3230476.JPG
Checking the mounting nuts fit

P3230477.JPG
Checking the socket fits and there is good clearance because some sockets are fatter than others ...

Continuing...

This is how I aligned the motor and gearbox.
The BMW K100 gearbox has a push rod hole through the main in[put shaft. On closer inspection this is a very accurately machined 10mm hole so a length of ground 10mm steel fits almost perfectly with no perceptible play. The motor output ...

A long needed update, The motor - gearbox adapter plate construction.
Two bits of 10mm ally from the local scrap yard make up the 20mm gap needed between the original clutch bell housing and the electric motor.
Picture heavy because getting the alignment was a tricky process that needs to be right ...

I've got a couple of IMA inverters I've put one in a mini moto and planning to use one on a small motorbike project with a hub motor wheel.
The IMA inverters are great looking bits of kit. Especially the later one with built in current sensors and capacitors.

The mini moto is currently using some ...

The BMW i3 range extender inverter appears to be rated for 24kW but is there any info on what it's actual capable of?
Or what power transistors are in it etc to make an educated guess just in case they use the same power modules as the larger main inverters.

Reason is I'm building a larger ...

Thanks,
That's good to know.
I've got enough projects on the go so cant see me doing much with this any time soon.

I've left them in my lockup across town but will get them home tomorrow and check that out.

I've just acquired 6 SHAdMO Charge plugs from the local scrap yard that were in their 'interesting skip' which is usually full of broken lawnmowers and bicycles. They don't normally have this sort of stuff but I usually have a rummage in their interesting skip every now and again and today turned up ...