AEVA Forums

I can't do that because there will be a large, structural beam through the centre, along with all the buslinks

I think this will be the least worst way of running coolant through the pack. The return line need not go back through the main battery pack, but it will be a bit neater. The gap between them is about 900 mm, and the axle and 4-wheel steering unit are right in between.

Yes the new charger is being assembled while I wait. It will be good to be able to decrease the power to suit a 10 or 15 A socket, but as I've covered before, the extra voltage is worth adding if I can. It's just a bugger to fit. If the new charger would get here sooner I'd install it and just get t...

No not yet, but I hope to have the 60 Ah cells very shortly.
Unfortunately, Roger fell gravely ill so his wife Pauline will take on the project.

Okay I might have some insight into the charger problem. I jury-rigged a solution using one of my 2 kW chargers I use to charge the race bike. These are designed for charging 84 cells in series, up to a Vmax of 350 V. So higher than that of the current Prelude battery at 72 cells, but not so far awa...

OK some more diagnostics. I put the sixth and final pin in the TC charger plug and ran it out for measurement. A - CAN Lo B - CAN Hi C - CAN Ground (continuity with chassis) D - 12 V+ E - 12 V- F - Enable I plugged the Type-2 plug into the charge port and started probing with the multimeter I found ...

Well I plugged the Type-2 connector from the OpenEVSE and looked at the charger: red-red-green-green... I connected D and F and it briefly caused the pumps to change pitch (suggesting some fluctuation on the 12 V system) and the charger changed to red-red-red-red... Before reverting to reg-green-red...

Yes, the AVC2 is indeed still connected with all of this. I had assumed that the AVC2 had a diode and relevant resistors in there to start with... otherwise, what's the point of it?

I will troubleshoot the TC charger tomorrow morning when I'm fresh. Not a good idea to persist right now.

I tried to change the resistor arrangement as per the Modular EV Power website's suggestions. I was plugging Richard's Open EVSE in. Putting a 880 R resistor between pilot Earth and ground caused a 'ventilation error'. Putting a 1.3kR resistor between pilot Earth and ground caused a 'diode error'. P...

Sounds a bit like my welding. I welded a bench once, and told a friend "Don't look too closely at the welds though" He replied dryly, "No need, I can see them from here" :| Or when I did a concrete slab for a garden shed. Someone asked if I'd written my name in the cement before it set. I said, "No,...

Which is why I think it works best with Type-1 and not with Type-2. Perhaps a delay of some kind is needed for Type-2?

Granted, no. But this is an AVC 1 , the predecessor to the AVC2, and the difference could well be the timer. A timer could of course be done in software with an 8-pin microcontroller. Also, there must be more components on the back of the AVC1 board, like the relay. The paucity of vias does indicat...

Thanks Mike, The Schneider charger at Melville Renault is a stand-alone charger, so nothing else in the region. I assume it's a 32 A unit, because the Prelude charger currently takes about 27 A from the wall. I can't find a decent diagram of the AVC2, however I did spot this: avc1_13182s.jpg avc1_13...

Have you determined if they need to be balanced or not? If the cells are all different states of charge you will have one or two hit the gong well before the others.

These the blue cells you had shipped up? Yes you can have the BMS switch the charger off if a cell hits the set upper voltage, but this means it doesn't go through the constant voltage stage of the charge, missing out on about 10% of the capacity available. It's also kind of risky if it doesn't stop...

Correct. However we tried a resistor between Prox and Gnd and it make no difference with an EVSE from Hyundai. Yet the Mitsubishi EVSE worked just fine even with the T1-T2 adapter. Curiouser...

One possible cause of the EVSE failures is the lack of a 2.7k resistor between proximity and ground. I'll have to give this a try and see how it goes. It means another drive down the hill though...

Hi Don, can you please show me what your wiring diagram was for the J1772 protocol? I've got an AVC2 in the Prelude but the success rate with some charge points so far is pretty poor.

Well I can confirm that the EO charge point won't work, the Schneider charge point works for a minute, then drops out and needs to be reset, and Tesla destination chargers don't work.
It seems the AVC2 is too simple a trick for these smarter charge points...

An update on yesterday's efforts. I attempted to charge at an EO charger in Fremantle - no dice. On the way home, I attempted to charge from the Schneider charge point at Melville Renault - worked for a minute, then stopped. Un-plug, re-plug, runs for a minute, then stops. I drove on to Kewdale Tave...

It's interesting because Richard's OpenEVSE unit works a treat. That said, even with the power turned off at the wall, plugging the T2 conenctor into the car fires everything up, so it's not actually looking for any fancy signals, just some passives in the PE->PE circuit. I'm going to try the charge...

There is *some* back-off regen, but nothing like what we have on Voltron. It seems the brake regen is the best you can hope for and it barely pulls the car up. The controller is really dumb - there are like, 9 pins controlling the whole show. It was fair for the price, but short of adding more volts...

Reviving an old thread there, but I just tried plugging the Prelude into an EO Type-2 charge point in Fremantle and nothing happened. I wonder if the AVC2 is a bit too simple for the average charge point? It will only take about 25 A from the AC side, so any 32 A capable charger should be fine. But ...

Not long - clutch is very nice to have.

I just drove into Freo to try the EO chargers - no dice.

So its OpenEVSE or nothing...