[Ovmsdev] Handling pilot signal interruption

[Chris Box]

Michael,

Actually the car commences charging when it sees the pilot signal 
return, so the charge current is above 8 amps.

I guess I'll wait to hear if any other folks on this list have an 
opinion on the best way to solve this. Or anyone that says "Please don't 
do that approach".

In the absence of anything I'll pick one of my workarounds and give it a 
try.

Thanks

Chris

On 2025-01-14 12:03, Michael Balzer via OvmsDev wrote:

> Chris,
> 
> not owning a Leaf or having any info on it, so just an idea: assuming 
> the charge current remains zero in this case, you could inhibit the 
> charge stop based on that condition.
> 
> Regards,
> Michael
> 
> Am 14.01.25 um 11:45 schrieb Chris B via OvmsDev:
> 
>> Hi everyone
>> 
>> First, thank you for working to build OVMS. It's an amazing 
>> achievement.
>> 
>> I only started using it late last year. I've encountered just two 
>> issues, and fixed the first of those in PR#1081.
>> 
>> I'd like to ask for your opinion on how to fix issue #1086 [1]. 
>> There's a shortcoming in Nissan hardware that means that timed climate 
>> control start can cause the charging pilot signal to disappear for a 
>> tenth of a second. This makes the car think it has just been plugged 
>> in, and it commences charging.
>> 
>> OVMS then notices it is charging beyond the target SOC and commands 
>> the car to stop. This is fine, except it also ends the climate control 
>> before it has even had a chance to get going.
>> 
>> My first idea for a workaround is to implement a configurable time 
>> period during which SOC limit isn't applied.
>> 
>> Another idea is to implement detection for pilot interruption, and 
>> inhibit SOC limit for 30 minutes after that occurs.
>> 
>> What do you think should be done here?
>> 
>> Thanks,
>> Chris


Links:
------
[1] 
https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1086
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