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by DBMandrake
Sun Dec 02, 2018 9:31 am
Forum: Batteries and Battery Management
Topic: Wrecked i-MiEV Battery Pack Discussion
Replies: 40
Views: 14755

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: 14755

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: 186

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: 561

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: 561

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: 329
Views: 20991

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: 561

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: 329
Views: 20991

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...
by DBMandrake
Wed Nov 14, 2018 9:20 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 329
Views: 20991

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

Update: Not helped dcdc plud disconnect and 12v boost to 13.8v. Still got same DTC active again allways even reset codes. So car goes to official garage.. i said that no need new heater or AC compressor so just disconnect and seal tape connectors if fault. The car relies on the AC compressor for ra...
by DBMandrake
Wed Nov 07, 2018 11:27 pm
Forum: General Technical Discussions
Topic: Peugeot ION multiple problems
Replies: 12
Views: 873

Re: Peugeot ION multiple problems

Open the small inspection cover on the Motor Control Unit (aka Drive Inverter) and verify that the fuse is blown. Chances are high that the On Board Charger/DC-DC Converter unit has internal damage also if the fuse has blown. Surely the high voltage needs to be isolated before opening the cover or ...

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