AEVA Forums

What voltage is your charger configured to cut out at? And how many cells do you have? I have a TC Charger, which is apparently the same charger. Mine is model number TCCH-H175.2-12, which means that it will cut out at 175.2V (48 cells x 3.65V). One extra test I thought that you could do is to conn...

So just connect charger 12V to ENABLE. I think this is what you have done, but I thought I'd mention it just in case. Thanks for that, I'd come to that same conclusion after sticking a multimeter on the two wires and getting 12V. When I connect them to enable charge I now get a soft electric whine ...

The Elcon charger is the next challenge, I'm yet to have it acknowledge the pack, closing the Enable and 12v lines gets a series of flashing green and red LEDs, indicating the pack isn't connected. An outside chance: do you have the whole pack connected? We found our 417 V Elcon charger would only ...

It's been a long time coming but today the motor turned over in neutral. The SolitonJr had me thinking it was failing to start for some time, the fans come on, the dash light flashes and then it goes dead with a thud, or so I thought. It turned out after much head scratching that it was on and engag...

Hey there, a quick one regarding your X-pert pro setup. I've been fiddling with mine today and only just realised that with the 1:10 prescaler it links the car's 12V ground with the HV negative. Have you found a solution to this or are you only monitoring a few cells? In which case doesn't that caus...

Thanks for the tips on the DC/DC isolation situation guys. I think I've wrangled a way to switch the aux battery on the dash. An new illuminated switch beside the e-stop will hopefully remind me to switch it off as I shut the rest of the car down. Until everything is powered up and running my diagno...

Some pics of the front battery pack going in: https://lh6.googleusercontent.com/-18NHqlByrPY/Usnu-Q3nzCI/AAAAAAAAAoI/rRlBYGAWCo0/s640/photo%2520%25286%2529.jpg https://lh3.googleusercontent.com/-DmPgAn7TQLs/Usnu-_UODmI/AAAAAAAAAoM/H1wAOMsB-ik/s640/photo%2520%25285%2529.jpg https://lh3.googleusercont...

Do you know what the output current specification is? Thanks for the diagram Chris! That makes sense now. The IOTA can output 55A max so from what you've described I'd want a Schottky diode that can handle 12VDC 55A. From what I gather that's a tall order? Thinking on it further this afternoon I re...

Still waiting for her front battery pack. Once this drops in there's only a few final HV connections to make before I can do the initial charge.

T1 Terry wrote: If you confirm the problem is the DC to DC, what about a Schottky diode in one of the connecting cables to stop back flow?
T1 Terry

Mm diode logic is new to me but would that not let me use the battery's current but then restrict it being charged by the DC/DC or vice versa?

I've come up against a aux battery drain problem though. I've wired the DC/DC convertor to the small 12V 7amp hour cell, this supply then runs up to the e-stop in the dash and onto the rest of the car via the fuse box etc. When the e-stop is open and everything is turned off the aux battery is drai...

EV2Go wrote: Wired through the ignition key?

Good idea, although part of my problem is that if that aux battery is in the circuit after the e-stop then the main contractor will stay closed if I punch the e-stop in an emergency situation.

Thankfully summer holidays have rolled around so I've got some time in the shed with the VW. I've come up against a aux battery drain problem though. I've wired the DC/DC convertor to the small 12V 7amp hour cell, this supply then runs up to the e-stop in the dash and onto the rest of the car via th...

Thanks for the note! It's still happening, very slow going between too much work. I'll certainly update as progress occurs. Cheers.

Thanks Ian, that's the answer I was hoping for. Appreciate it!

Meanwhile a couple of progress pics from the build: http://distilleryimage6.s3.amazonaws.com/f5f39c0e990211e2aea022000a9d0ee7_7.jpg Slow backseat progress. http://distilleryimage0.s3.amazonaws.com/5244a40a7cb911e2828a22000a9f191e_7.jpg The JNR mounted and wired. http://distilleryimage4.s3.amazonaws....

Quick question to those who know what they're doing - my Iota DLS-55 HV DC/DC converter has input leads that unplug and are not marked for polarity. Does anyone know if these things are polarity sensitive and if so how would I safely ascertain which way it might be? https://lh3.googleusercontent.com...

Quick update as the front pack goes together. I've dropped the welded 1mm steel cases in favour of a solution that bolts together. Using the ribs of the cells and clamping them into packs of 11. Each set is compressing about 8mm from the 4xM8 bolts. http://distilleryimage2.s3.amazonaws.com/5ba38eb05...

A recent photo of one of the front battery boxes. Two of these will hold the forward 22 cells. These are profile cut 1mm mild steel, stitch welded and due to be sealed to prevent water ingress. My engineer turned me away from aluminium due to galvanic corrosion in contact with steel parts and long t...

https://lh3.googleusercontent.com/-gyaepkFAuWQ/UD8xI9aY6gI/AAAAAAAAAZk/ZxjskoJlqBQ/s600/Rear%2520Sub.jpg Some progress on the VW, rather than saving the work up I've been keeping a task at hand everyday in the shop so I can get little bits happening in any downtime. The transmission/motor/controlle...

The '69 VW Type 3 transmission has finally made friends with the Kostov 17R.

https://lh5.googleusercontent.com/-xLjnMzCxW_8/T7OYJu5z8AI/AAAAAAAAAY8/kBJ0d_NcWGA/s600/Flywheel.jpg Usual excuses, work, life etc but here's a quick update on the VW. My flywheel arrived back today from getting machined, from >7kg down to ~4.5kg, gear ring taken off, cleaned back to an immaculate ...

Progress shot as paint goes down and 12V circuits start going in.

Very very impressed and happy for you that's all registered and motoring around! Congratulations! Envious... but getting there.

Jem

Hoovering out the last of the sand that still lingers from sandblasting parts of the chassis.