[Ovmsdev] i-Miev/C-Zero/iOn

[Matt Beard OVMS]

Having disconnected OVMS and power-cycled the car the charge seemed to be
going OK, so I connected the unit back up and let it go the last 50% or so
with OVMS and it was still fine. So, looks like something set a bad value!
Maybe there is a "set max % charge" CAN message and it got set due to noise
on the bus. Wish I knew what it was!

Matt



On 25 September 2013 14:35, Thomas Bergo <thomas.bergo at gmail.com> wrote:

> How did the rest of the charging go?
> Any other hick ups?
>
> Regards,Thomas
>
> onsdag 25. september 2013 skrev Matt Beard følgende:
>
> The SOC was about 25%
>>
>> Matt
>>
>>
>> On Tuesday, 24 September 2013, Thomas Bergo wrote:
>>
>> Was the SOC approximately 70% ?
>>
>> The Car takes a pause and stops charging for some time at 70%. I belive
>> this is to level the charge state of the cells. After some time the
>> charging will continue.
>>
>> Regards, Thomas
>>
>> tirsdag 24. september 2013 skrev Matt Beard følgende:
>>
>> More strange behaviour with my C-Zero.
>>
>> Trying to investigate charging current today I discovered that the car
>> would not charge for longer than a couple of minutes with the OVMS
>> connected (with Thomas' image loaded). It would start charging, then the
>> current would drop to zero, but the charge light stayed on. After a while
>> it stopped even trying to charge. Disconnecting the OVMS didn't fix it
>> until I also turned the car on and off again (with the OVMS not connected).
>> Did can noise cause problems again?
>>
>> Matt
>>
>>
>> On Tuesday, September 24, 2013, Thomas Bergo wrote:
>>
>> The first models (2011) was delivered with a 16A cable. This was changed
>> for the later models (2012 ->) to 10A cable do to firesafty.
>> At home i use a 16A cable for charging, but the car only draw 13A.
>>
>> I'm not sure what is the correct info, EVSE limit or the charger limit.
>> Any way the car will only draw 13A.
>>
>> The can message for current limit set by EVSE is not know for the i-Miev,
>> so until this information is available we need to hardcode a value to be
>> displayed in "STANDARD xxA" in the app.
>>
>> Regards, Thomas
>>
>>
>> 2013/9/24 Håkon Markussen <hakon.markussen at gmail.com>
>>
>> Nice work Thomas,
>>
>> Your attached image reminds me that I should implement the car_time and
>> car_parktime in the Think City module :-)
>>
>>
>> Regards to max charge rate "STANDARD xxA":
>> The variable car_chargelimit should contain the maximum available mains
>> current, which is set by the EVSE.
>> This is done in vehicle_thinkcity.c and I assume this can-message is
>> available in a iMiEV and could replace the hardcoded "13A".
>>
>> The evse sends a pilot signal controlling the charger max rate, which can
>> be adjusted by the user in steps depending on the evse type.
>> The first evse's for iMiEV was delivered with two charging steps (maybe
>> 10-16A) and got popular among Leaf-owners. Running up to 16A over the
>> Schuko-connector is bad firesafety, so the later evse's were replaced with
>> 13A. (I guess) limit max.
>> This one is a nice one(mode 2, type 2 delivered with different charging
>> connectors:
>> http://salto.no/produkter/ladekabel-justerbar-13-a-type-2-shuko/
>>
>>
>> When the max charge current is set by the evse, e.g. 13A the ac-charge
>> current (which can be measured or viewed in a can-message) will never
>> exceed this limit.
>>
>> Br.
>>  Håkon
>>
>>
>> 2013/9/24 Thomas Bergo <thomas.bergo at gmail.com>
>>
>> I don't remember to have seen any documentation. There is a common
>> understanding in Norway that the car only can drain 13A.
>> I have also measured hove much current the car use when charging.
>>
>> This setting is only for information in the app, as no information is
>> send to the car from the car module. There is no way that the car module
>> can impact on the charge current. The voltage and current (13A) is reported
>> by the car and not limited by the OVMS.
>>
>>
>> [image: Innebygd bilde 1]
>>
>> Regards, Thomas
>>
>>
>> 2013/9/24 Matt Beard OVMS <smvo at mxf.org.uk>
>>
>> Do you have a source for this 13A maximum claim?  Mitsubishi claim that
>> the on-board charger in the iMiev runs at 240V 15A in the USA.
>>
>> If you want to use the output rating of the charger you need to reduce
>> the figure to 9A as the output is 330V.
>>
>> What does the Roadster version set - does it use the input current, or
>> some version of the output curre
>>
>>
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