[Ovmsdev] Charge time prediction

Mark Webb-Johnson mark at webb-johnson.net
Wed May 16 08:19:13 HKT 2018

If we don’t know current + voltage available from the charger, then how can we predict charge time? Or is the current + voltage for the Twizy always the same (fixed?).

I think it is important to clear these prediction values when they are no longer useful or correct, and relying on individual vehicle modules to do it seems incorrect. We should be able to do this in a standard way. But, I see your point about an interrupted charge (I guess in that case we can presume a new charge would resume and the predictions would be roughly correct, so long as vehicle and charger state did not change).

How about we clear these when the vehicle charge port is detected closed? (in addition to the existing ‘charge done’ condition)

Regards, Mark.

> On 16 May 2018, at 1:44 AM, Michael Balzer <dexter at expeedo.de> wrote:
> I've changed that to happen on state "done" for now to fix charge stop notifications.
> I still don't think it's necessary.
> Regards,
> Michael
> Am 15.05.2018 um 18:41 schrieb Michael Balzer:
>> Mark,
>>     commit 9b841bfaaf5538da465e66da31c308c8c370f76f
>>     Vehicle: Clear the charge time predictor values, for all vehicles, when charge ends.
>> That approach is not correct, I still (or especially) want to know the remaining charge time for the sufficient levels and the full charge if I stop the charge
>> manually or automatically.
>> I wouldn't see a problem in doing this based on the charge state "done", but is this necessary at all? Wouldn't the vehicle normally calculate the prediction
>> continuously based on the SOC and charge config? The SOC changes independantly of charging and driving by self discharging and powering components, recharging
>> the 12V battery etc..
>> Regards,
>> Michael
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