Search found 2924 matches

by jonescg
Thu, 12 Sep 2019, 15:47
Forum: Batteries, charging, management and monitoring
Topic: Lifepo4 pack charging
Replies: 7
Views: 234

Re: Lifepo4 pack charging

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...
by jonescg
Wed, 11 Sep 2019, 20:02
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

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...
by jonescg
Wed, 11 Sep 2019, 14:40
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

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...
by jonescg
Tue, 10 Sep 2019, 11:38
Forum: Technical and conversion discussion
Topic: Need Help with J1772 wiring. Gelco EVSE ??
Replies: 19
Views: 2657

Re: Need Help with J1772 wiring. Gelco EVSE ??

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.
by jonescg
Tue, 10 Sep 2019, 10:15
Forum: Charging Infrastructure
Topic: Making a conversion J1772 / IEC 62196 capable
Replies: 13
Views: 2091

Re: Making a conversion J1772 / IEC 62196 capable

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...
by jonescg
Tue, 10 Sep 2019, 09:30
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

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...
by jonescg
Mon, 09 Sep 2019, 15:25
Forum: Charging Infrastructure
Topic: Making a conversion J1772 / IEC 62196 capable
Replies: 13
Views: 2091

Re: Making a conversion J1772 / IEC 62196 capable

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...
by jonescg
Mon, 09 Sep 2019, 15:13
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

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...
by jonescg
Mon, 09 Sep 2019, 13:10
Forum: Charging Infrastructure
Topic: Making a conversion J1772 / IEC 62196 capable
Replies: 13
Views: 2091

Re: Making a conversion J1772 / IEC 62196 capable

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 ...
by jonescg
Mon, 09 Sep 2019, 12:47
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

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...
by jonescg
Mon, 09 Sep 2019, 11:59
Forum: Members Machines
Topic: Brendon_m Moke
Replies: 154
Views: 10624

Re: Brendon_m Moke

Oooooh, now you can tow your Moke places! Nice one!
by jonescg
Mon, 09 Sep 2019, 11:47
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

You run out of legs half way across the intersection...
by jonescg
Mon, 09 Sep 2019, 11:39
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

Drove the Prelude to work today - I'll have to grab some video. It goes well, but it does feel underpowered. I expected it to be underpowered given the lower pack voltage, but it does seem a bit ordinary. You must take off in 2nd if you want any respectable acceleration, particularly up hills. The r...
by jonescg
Mon, 09 Sep 2019, 09:57
Forum: Renault
Topic: Route Planning
Replies: 5
Views: 153

Re: Route Planning

I'll be interested to hear how the 22 kW charging goes.
by jonescg
Sun, 08 Sep 2019, 19:34
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

Well we had hoped to take the Prelude for a bit of a maiden voyage to Mundaring, but only made it as far as the bottom of the weir before it stopped. Upon turning off and on again, it was clear the drive contactor wasn't happy, suffering pretty significant voltage drop, dropping out, followed by re-...
by jonescg
Sat, 07 Sep 2019, 19:28
Forum: Renewable Energy and Storage (Non-EV)
Topic: AVASS Cells capacity
Replies: 2
Views: 132

Re: AVASS Cells capacity

I would think the internal resistance is much closer to 0.5 Ohms, rather than milliohms.

Still, anything over 400 Ah capacity is good going considering their price!
by jonescg
Sat, 07 Sep 2019, 16:58
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

Oh the brake regen is good, but not particularly strong. It puts about -20 amps back in as you dab the brake, or about 5 kW. Better than nothing.
by jonescg
Sat, 07 Sep 2019, 16:40
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

A quick test of the charger and it seems the ancillary systems are working as they should. 20190907_160644.jpg The coolant is pumped through the battery at any temperature above ~18'C while the A/C relay switches on at 25'C. It oscillates a bit, so I need to incorporate more averaging and hysteresis...
by jonescg
Sat, 07 Sep 2019, 13:37
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

I have been getting the charger to behave as best it can today - spend last night balancing down the highest cells. I think we shed about 0.06 volts overnight... Its working, albeit slowly. The charger put in about 10 kWh on the AC side, but the highest cells were hitting 4.2 V so I had to leave the...
by jonescg
Thu, 05 Sep 2019, 08:59
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

While I wait for the new charger to arrive, I thought I would try and isolate this fan-coming-on-after-switch-off problem. I put fuse 12 back in, turned the car on, then turned it off, and sure enough the radiator fan came on. As it was running I went through the dash fuse box pulling out fuses unti...
by jonescg
Tue, 03 Sep 2019, 10:58
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

She seems to suggest it won't be stable at less than 320 V DC. I've ordered a new one anyway. I'd rather see that it works (or not) first before attempting to fit the last two battery modules in the boot somewhere, where they won't have easy access to cooling circuits etc.
by jonescg
Tue, 03 Sep 2019, 10:13
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

And now it turns out the CAN-bus controlled charger won't go as low as 301 V max. 320 V is the lowest it will go. Grrr!
by jonescg
Tue, 03 Sep 2019, 09:53
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

So it seems my request for a charger with CAN-bus and enable control was lost in translation. They sent me an Enable only charger. So I am up for a new charger, and will be trying to find a use for this one... $1500 later.
by jonescg
Tue, 03 Sep 2019, 08:42
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

Yeah I think I'll try and get the battery charged up at a nearby 32 A socket and sort out these backfeed gremlins. In the meantime I'll be ordering a CAN-only charger from TC.

And I'll need to line up a date with the engineers...
by jonescg
Mon, 02 Sep 2019, 22:13
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 431
Views: 28883

Re: Prelude conversion project - some questions

On this day, 2nd of September, 2019, Francess' 1988 Honda Prelude drove out of the workshop a new vehicle. 0P9zi3K-sws uGwgdjIPCVg My lovely wife Kat offering commentary, and is no doubt as relieved as me to see the light at the end of the tunnel. Charger still won't play nice, so I suspect I've bee...