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by coulomb
Tue Apr 06, 2021 6:11 am
Forum: Batteries and Battery Management
Topic: Replace CMU?
Replies: 6
Views: 329

Re: Replace CMU?

i think there is a forum thread with pictures and schematics of the CMU board, i remember seeing this Yes, one by that helpful Kiev chappie :D http://myimiev.com/forum/viewtopic.php?f=23&t=4302 Edit: only a couple of partial schematics are traced, but one happens to involve the auto-numbering c...
by coulomb
Sun Apr 04, 2021 5:17 pm
Forum: Batteries and Battery Management
Topic: Replace CMU?
Replies: 6
Views: 329

Re: Replace CMU?

kiev wrote:Simon and coulomb know more about the automatic renumbering feature of the BMU.

I only know the details of how it works, at the firmware level, but unfortunately not any practical method to trigger it.
by coulomb
Mon Mar 29, 2021 8:14 pm
Forum: Batteries and Battery Management
Topic: Level One Charger Won't Charge
Replies: 11
Views: 515

Re: Level One Charger Won't Charge

Yes, earth is required for EV charging.
by coulomb
Mon Mar 22, 2021 5:56 pm
Forum: Batteries and Battery Management
Topic: No READY. P1A15 error. Condenser charge timeout.
Replies: 137
Views: 58459

Re: No READY. P1A15 error. Condenser charge timeout.

Duh. The capacitor voltage is obviously declared too low (whether it really is or not), because of the trouble code. So forget what I said about the main contactor not working. A final thought: maybe when that trouble code is asserted, the EV ECU does something to quickly discharge the DC bus: perha...
by coulomb
Mon Mar 22, 2021 5:44 pm
Forum: Batteries and Battery Management
Topic: No READY. P1A15 error. Condenser charge timeout.
Replies: 137
Views: 58459

Re: No READY. P1A15 error. Condenser charge timeout.

Maybe the capacitor has a decreased capacitance and is not 800 microfarad due to aging? If it has, it will only make the pre-charge process faster. It may have excess leakage, but I don't expect that from a film capacitor (if that's what it is). if they are the same, and still the EV-ECU receives o...
by coulomb
Sat Mar 20, 2021 4:36 pm
Forum: General Technical Discussions
Topic: Not able to drive. P1A15 error.
Replies: 32
Views: 3846

Re: Not able to drive. P1A15 error.

Charger set to charging voltage 14.40 V. After battery was fully charged, Voltage 13.15V. Does your charger do a proper absorb charge, or just stop when the battery voltage reaches 14.4 V? It should keep the battery voltage at 14.4 V or so for long enough that the charge current drops to a low valu...
by coulomb
Sat Mar 20, 2021 4:26 pm
Forum: Batteries and Battery Management
Topic: European 3ø Inverter Interface
Replies: 2
Views: 220

Re: Troubleshooting and repair for On-board Charger (OBC)

The charger in the car is a single a phase, 230V, the same as we all possess but I made a mind experiment to power this imiev’s AC cable from 3 phases, 400VAC rectified by a half bridge composed of just 3 diodes into a direct current. I see two problems with this idea, neither of which may be fatal...
by coulomb
Wed Mar 17, 2021 8:53 pm
Forum: Batteries and Battery Management
Topic: New Replacement Traction Battery - Changes in Construction
Replies: 4
Views: 408

Re: New Replacement Traction Battery - Changes in Construction

centex wrote: what differences are there compared to the original battery?

As far as I know, the only difference will be the LEV50N cells, replacing the original LEV50s. The Ns are a fair improvement, but that's it as far as I know.
by coulomb
Wed Mar 17, 2021 6:58 am
Forum: Batteries and Battery Management
Topic: No READY. P1A15 error. Condenser charge timeout.
Replies: 137
Views: 58459

Re: No READY. P1A15 error. Condenser charge timeout.

the battery pack holds about 354V, but the condenser voltage is rising to 342V and falls down to 2V. Is this fault also related to that the car will not charge? Yes, certainly. If the condenser doesn't hold battery voltage, then the charrger can't work, you can't drive the car, and you can't use th...
by coulomb
Sat Mar 13, 2021 6:37 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC)
Replies: 645
Views: 319747

Re: Troubleshooting and repair for On-board Charger (OBC)

For those outside Australia, QLD (Queensland) and Canberra are in Australia. If anyone would be able to sift through the 64 pages with me that'd be really great. I'm happy to learn and /or even pay someone to help to fix the current OBC. Liam, where are you located? I'm a bit stretched at the moment...

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