Go to advanced search

by DBMandrake
Sun Jan 06, 2019 3:11 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 337
Views: 26251

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

KIEV: I am tending to give more weight to your theory that majority of OBC Failures are being caused by a sick 12v aux battery. At first, I thought these failures were due to mains power surges, but now I see more evidence towards the aux battery being the lead contributor to these failures. Here i...
by DBMandrake
Sat Dec 22, 2018 1:23 pm
Forum: Batteries and Battery Management
Topic: Both of my Peugeot Ion's won't charge
Replies: 6
Views: 732

Re: Both of my Peugeot Ion's won't charge

A Chademo charger is not of much use when the OBC is not charging the 12v battery on either car as the 12v battery will still go flat when driving.
by DBMandrake
Sun Dec 02, 2018 9:31 am
Forum: Batteries and Battery Management
Topic: Wrecked i-MiEV Battery Pack Discussion
Replies: 40
Views: 15825

Re: Wrecked i-MiEV Battery Pack Discussion

He did mention that one side measured 9 Ohms for part of the undamaged length and estimated two in series would be about 20 Ohms. The gauge of the wire and number of turns seems consistent with the measurement. But If it were 240 Ohms, then the power load would be 540 W for about 0.6 seconds to cha...
by DBMandrake
Sun Dec 02, 2018 12:45 am
Forum: Batteries and Battery Management
Topic: Wrecked i-MiEV Battery Pack Discussion
Replies: 40
Views: 15825

Re: Wrecked i-MiEV Battery Pack Discussion

If K is the tolerance I would have thought that would make the value 240 ohms not 24 ?

5400 watts seems like an awfully high surge even for 60ms for a 40 watt resistor.
by DBMandrake
Thu Nov 29, 2018 8:56 am
Forum: Batteries and Battery Management
Topic: When and how the car adjusts its estimate of the battery capacity
Replies: 2
Views: 301

Re: When and how the car adjusts its estimate of the battery capacity

This graph was taken during a Level 2 charging session I assume ? Interesting observation, but I'm not sure what conclusions we can draw from it on the relative meaning of SoC1 and SoC2. The discontinuities in the line near 30% and 90% would be consistent with the points where voltage based estimati...
by DBMandrake
Thu Nov 29, 2018 8:48 am
Forum: Batteries and Battery Management
Topic: [Solved: Piev's Strange New Pack] Voltage vs SOC graph or table ?
Replies: 13
Views: 980

Re: Pack Voltage versus SOC graph or table ?

If the charger charged the battery to more than 4,1 volts per cell then that would speed up battery aging. Do we have any reason to believe this happened though ? Enough over charging to cause that amount of degradation in such a short time is more likely to result in the cells catching on fire... ...
by DBMandrake
Thu Nov 29, 2018 5:50 am
Forum: Batteries and Battery Management
Topic: [Solved: Piev's Strange New Pack] Voltage vs SOC graph or table ?
Replies: 13
Views: 980

Re: Pack Voltage versus SOC graph or table ?

It's difficult to know what is the issue with Piev's pack since it is only showing a full capacity of 21.4 Ahr, yet it was replaced under the warranty about 19 months ago. Canion also agrees with the 21.4Ah figure ? Is the range also severely impacted ? Assuming that a new pack is good for 40 Ahr b...
by DBMandrake
Thu Nov 29, 2018 5:28 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 337
Views: 26251

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

ChristofER: I bought a chinease clone of a MUT III diagnostic tool, and I can use it to scan all the DTCs like a real MUT III, but one of the weird things is that when I go to the menu section to look at things like EV-ECU, CMU, BMU and OBC hardware and firmware revisions, it cannot read anything f...
by DBMandrake
Thu Nov 29, 2018 5:19 am
Forum: Batteries and Battery Management
Topic: [Solved: Piev's Strange New Pack] Voltage vs SOC graph or table ?
Replies: 13
Views: 980

Re: Pack Voltage versus SOC graph or table ?

https://i.ibb.co/XV1ZQmD/Voltage-So-C-1-amp.jpg Here is some data from my car. All of these measurements were recorded when the load on the battery was less than 1 amp. The spread is probably due to varying temperatures. Apparently a combination of 352 volts and 67 % SoC is possible. Which perfectl...
by DBMandrake
Fri Nov 16, 2018 5:36 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 337
Views: 26251

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

Thx for replies. I just readed AC Comoressor and heater connection drawings and find out there are no HV relays for those.. this is nonsense.. So only way to disconnect/isolate them is really only fuse remove in bottom of car. So starting prosedure really allways chech also those components HV side...

Go to advanced search