[Ovmsdev] 12v Reference voltage

[Michael Balzer]

Tamás,

the reference voltage is meant to follow battery degradation and 
environmental thermal conditions, it's currently taken after a 12V 
charge cycle, with some calmdown time taken into account.

To do that, it relies on the `ms_v_env_charging12v` signal. If that is 
broken, it won't work properly -- and your chart seems to show that: the 
reference has been taken while the 12V charge was still running.

Looking at the 12V chart for my Mii, there apparently is room for 
improvements regarding very short driving periods, but on regular 12V 
charge cycles it works as designed:




So I suggest taking a look at improving the `ms_v_env_charging12v` 
detection on your car.

Regards,
Michael


Am 22.12.24 um 10:45 schrieb Tamás Kovács via OvmsDev:
> Can anybody explain, why changing the 12v reference voltage, or 
> is that good? I get some battery notification because this. Hyundai 
> ioniq 28 kWh.
> Screenshot 2024-12-22 at 9.14.09.png (490 KB) 
> <https://mail.google.com/mail/u/0?ui=2&ik=b954432353&attid=0.1&permmsgid=msg-a:r6748997389650639300&view=att&disp=safe&realattid=f_m4zf8qem0&zw>
> -- 
> Best regards:
> Tamás Kovács

-- 
Michael Balzer * Am Rahmen 5 * D-58313 Herdecke
Fon 02330 9104094 * Handy 0176 20698926

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