AEVA Forums

It cost me $110 inc. to drop in to Racing Dynamics in Malaga to have it done.

OH! Forgot to mention, I got the weights too. Pretty sweet balance!

Added the isolator and the warning stickers. 20200222_130648.jpg 20200222_130658.jpg 20200222_130841.jpg The master contactor is unstuck now, but it made a funny high pitched 'boing' noise while toggling it on and off. Later in the year when I have the time, space and inclination I will drop the pac...

As long as the inverter has two MPPT inputs you can make that split array arrangement work.

MrD wrote: ↑

Fri, 21 Feb 2020, 10:24

Dubbo Electric Vehicle Interest Owners Users and Supporters group (DEVIOUS)

Well played sir. Well played.

You know you can set up a sub branch of AEVA in Dubbo? - easy as pie.

Patti McBain has been driving her converted Focus for over 100,000 km and it's still putting out a useable range. If that's not an endorsement for the longevity of LFP (even if the energy density isn't great) I don't know what is. The new Ioniq having a slower fast charge (50 kW instead of 70 kw, a...

It will only be cheaper because the battery is lower capacity. The $/kWh of LFP is actually higher than any nickel or cobalt based cathode. Should make them a bit less prone to fire at least, but the BMS will need to be updated. I also read that they would be sourcing prismatic LFP from CATL. So the...

Were you able to add some load? Like an upturned wheelbarrow wheel?

The welded contactor inside the battery is indeed a GX14 contactor. The drive contactor up the front used to be a Kilovac 200, but since replaced it with a GV240 contactor with auxiliary contacts for alerting me to a stuck conductor. And it's stuck again. So my solution is to abandon the master cont...

Not sure if this one has been discussed here or not, but it's a pretty tidy effort:


Not the IP56 minimum I would hope for, but at least it's neat.

Any chance the charger or DC-DC converter for 12v may be causing the problem? It's a possibility, but more likely I think it's a timing thing within the inverter. Besides, these are already powered constantly by the traction pack since the master contactor is stuck on. The main +12 V supply to the ...

The sticking contactor issue persists, so I am planning in installing a service disconnect in the back just ahead of the fuse. 20200215_153912.jpg 20200215_153925.jpg This ought to do the trick. This makes unsticking it a little easier and safer, but I would like to know why it's still doing it. The...

So the WA Charging Infrastructure report is getting a bit of attention. WA Today ran a story on it, and Bridie Schmidt put a story together this morning on the Driven. All we can hope is that this spurs some decent discussion within the WA government and opposition about embracing EVs and supporting...

Agree with most of that Dave. For as long as an equivalent ICE is $20k cheaper, EV sales will struggle. $20k buys a lot of fuel. It's also not helping that the legacy automakers are using existing ICE chassis to electrify their fleet because the shopper's immediate instinct is to compare it to the e...

I was planning on using 0.8 mm thick FR4. I used to buy big sheets of it from Regal-Beloit in Welshpool, but I think they stopped selling it. Now you have to go through a wholesaler to buy it. I like FR4 because it's tough, strong and is like kryptonite to electricity. As for the buslinks, I don't w...

Good question... I was planning on getting some 2 mm copper busbars made up with enough cross-section for about 40 mm2. Unfortunately, one crappy little M4 screw hole is pretty ordinary contact, so I plan on putting a kink in the buslink just to the side of the screw hole to ensure some decent surfa...

Yeah I fully expect any metal cased battery to be live to the case now. Rather disturbing the spec sheets mention nothing about this.
I think the FR4 will work OK. Not ideal, but what can you do.

I wonder if that's part of the reason these cells are high energy density and low cost - they forgot to include some key features

Yes, a lightglobe will light up between (-) and the case.

It's live alright - 0.01 ohms. Turned out it's just continuous between the case and battery (+).
I can get sheets of 0.8 mm thick FR4 between the cells and use 5 mm thick PE on the outer edges. Not ideal regardless.

Just checked and sure enough, the case of the cells is live

Sometimes it's consistent with the (+), sometimes it's continuous with the (-). So basically these cells will need to be packed out entirely with polyethylene so they can't touch each other, or the clamps.

Bugger.

One option is to use the existing clamping frames, but it makes securing the cells relative to each other a bit harder. Otherwise I'm looking at 3 mm plate aluminium and RHS with threaded rods. And lots of insulation between them.

new cell layout.jpg This looks to be the least worst termination arrangement for the 60 Ah prismatic cells. It allows for the modules to be terminated at the forward end, meaning a lot less copper than otherwise. Fly-wired to each cell top will make the BMS happy. The BMS should sit on top with a m...

Geez, no pressure. Only 100 iMiEV owners hanging on this thread right now!! SO today I removed the cover and started to take a look inside. First you have to remove the service disconnect entry point. The mastic is sticky, but once the four bolts are undone it lifts off easily. Remove sealing plate....

It's on again, and for the TENTH YEAR RUNNING! Electrikhana flier small.JPG https://www.electrikhana.org/wa.html Come and test-drive an electric car, bike, scooter or just hang out in the quiet peaceful surrounds of the Canning River. Supported by the City of Canning and their Changing Your World co...

Much cheaper.