BMW EV - Neue OBD2 iOS/iPhone app für den i3

[GBrick]

Hi Max, many thanks for adding me in your test group.

Today I've installed your app on my IPhone 8 and it runs smoothly so far. The connection with my OBD adapter VGate 4.0 was established immediately after starting the app and the values are transmitted to the IPhone.

My experience with the app during my 13km ride was as follows.

Register EV:

At beginning (i3 on, Position P, heating off, driver seat heating on, Eco mode)

At end (i3 on, Position P, heating off, Eco + mode)

- Different capacities, cell temperatures and cell voltages are shown
=> Do you know why 3 different values for each item are available?
- What is the Cell Res. Factor and is it plausible that the first value is strongly deviating from the two others?
- Cell at SOC is deviating from the BMW Connected App and the Electrified App (71.99 to 73.19% app vs. 68.0% BMW app & Electrified app)
- Battery temperatures seems not to be updated while driving (7,99 °C at beginning and end with driving distance of 13km and 250m elevation meters)
- Battery power seems not to be plausible (-14.25 kW when the i3 is not running and heating is off; Electrified app is showing -0,27 kW)

Electrified App for comparison (i3 on, Position P, heating off, Eco + mode)

Register General:

During driving (heating off, driver seat heating on, Eco mode, cruise control 82 km/h)

- Pedal throttle is shown as "not available"
- Consumption: This is the average consumption (since starting the OBD connection), correct?
=> Value seems not to be correct, because vehicle's BC is showing a significantly higher value (132 Wh/km app vs. 169 Wh/km BC)
- Temperature effective inside is a nice feature
=> Do you know where the temperature sensor is located in the cabin?
- Speed is deviating from the vehicle speedometer (79.2 km/h app vs. 82 km/h speedometer)
=> Do you measure the speed with the GPS of the vehicle?
- Various ranges are very confusing:
=> What's the differences between the different MCV ranges?
=> Combi Ranges: Min. range seems to be the range in the Comfort mode, max. range seems to be the range in the Eco + mode
=> But max. range is lower as the range in the vehicle display in Eco + mode (233km app vs. 265km vehicle display)

Charging:
- not tested yet

REX:
- not available in my i3

Thanks again for this promising app and your great work. I look forward about the future progress of this project. I would be happy if you have the possibility to implement a logging function for the different values (over the running period of the app) giving the possibility to analyse e.g. the power consumption of the i3 subject to driving speed and temperature.

[MaxD]

you are welcome and thank for detailed feedback.

>Do you know why 3 different values for each item are available?
these are in the form: avg/min/max

>What is the Cell Res. Factor and is it plausible that the first value is strongly deviating from the two others?
these are:

Output of the current minimum measured resistance factor of all cells / Ausgabe des aktuellen minimalen
gemessenen Widerstandsfaktors aller Zellen

yet in observation mode values.

>Consumption: This is the average consumption (since starting the OBD connection), correct?
I feel that it is last-known-average one, from trip on-board computer, and over On-board computer route....testing yet....

>Do you know where the temperature sensor is located in the cabin?
good question and see it located as "button"

button.png (29.92 KiB) 1521 mal betrachtet

(try to put your finger on top to heat a bit and see how crazy air condition system will be)

=> Do you measure the speed with the GPS of the vehicle?
it is Display speed


charging: different phases and AC/DC should be working but please check if possible

logging function - I am for it, just need to find good UI solution and how to dump the data collected,
may be over email to post-process on PC....not sure...

[MaxD]

new version should be available soon.

v1.0 (2) changes:
- Fixed Dark mode
- new calculation for Odometer
- added "Charging finish time"
- internal start of WiFi adapter support implementation

Summary
- not only i3 but Cooper SE seems to be supported,
thanks,AQQU for checking.

[SU-N_i3]

nice to hear and see so many progress. Due to security limitations of my business phone I need to wait for the official playstore version...

By the way: I very aprreciate the indication of all the digits regarding voltage values. Despite of the true values behind they show more precisely what the BMS sees and does in special situations.

[MaxD]

@SU-N_i3 thanks for good words

JFYI, TestFlight is official Apple's test approach

[Orbit]

>Do you know why 3 different values for each item are available?
these are in the form: avg/min/max

>What is the Cell Res. Factor and is it plausible that the first value is strongly deviating from the two others?
these are:

Output of the current minimum measured resistance factor of all cells / Ausgabe des aktuellen minimalen
gemessenen Widerstandsfaktors aller Zellen

If Cell Res Factor also are in format avg/min/max, the average is obviously wrong.

In general, would min/avg[or median]/max make mose sense for all numbers? I guess this is just a test UI for testing data collection, and not how it will be shown in a more polished version?

[MaxD]

I guess this is just a test UI for testing data collection, and not how it will be shown in a more polished version?

that is correct, final UI design - yet to come...

[GBrick]

new version should be available soon.

v1.0 (2) changes:
- Fixed Dark mode
- new calculation for Odometer
- added "Charging finish time"
- internal start of WiFi adapter support implementation

Thanks for your feedback and your efforts to implement the logging function

I've tested update v1.0 (2) with following feedback:
- new calculation for Odometer => there is a discrepancy between Odometer in app and Odometer in vehicle display (app is showing ~2km more)
- added "Charging finish time" => working

Beginning of DC-charging process (at 20kW DC charging pole):

End of DC-charging process:

[motoqtreiber]

I like the app electrified but I have an iPhone and do not want to buy android. So I would be happy to get your app for i3.
Would be cool if you could also support the new VW ID. If you plan to sell the app this is a faster growing market.

[MaxD]

@GBrick thanks for info,

Odometer, still interesting...yet need to collect more details...

Charging power is important and actually was one of the triggers to make the app

heh, I've spotted "Charging finish" format issue , should be fixed at next build.


sneaky peaky spoiler:
with upcoming build - WiFi people should be happy