Mitsubishi Outlander PHEV Forum

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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 5:17 am 
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elm70 wrote:
Was always the charging process completed when highest voltage per cell was 4.10v ?

In case ... it is maybe due to some unbalance

Else ... the BMU intentionally avoid to charge up to 4.10v the battery ... which is very "strange" ... or maybe it is one of their way to protect the car which may be left connected to a charger for "days"

I am pretty sure it was. Reason for < 100% could also be because my SoH number is still over inflated, regardless of last drop off.


elm70 wrote:
The main difference is that nobody would leave a hobby battery connected to the charger for days or even hours after the charging process is finish ... while this could happen on a PHEV
That cannot happen, I think. The charger is in the car remember? When the charger thinks the battery if dull, it shuts itself down. As a matter of fact the battery is completely isolated from the rest of the car. You can hear the main contactor clicking about when charging starts / finishes.


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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 7:05 am 
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elm70 wrote:
PS: For sure the charging process of our PHEV is a bit difference, since the initial phase more then charge at constant current, it is a charge at constant power ...but .. it would be interesting to see and monitor the final phase of the charging process ... mainly how evolve the charging current based on the cell voltage
Like this?

Image

hmmm, looks much better on my screen. Can you see this:

Image


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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 7:14 am 
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Pack and Max Cell voltage emphasised:

Image


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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 7:17 am 
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Unexpected (to me), very short after the charging process starts to taper off, pack and cell voltages are already at their maximums. But SoC is still 5% below max value.


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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 8:47 am 
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Location: Netherlands
elm70 wrote:

The main difference is that nobody would leave a hobby battery connected to the charger for days or even hours after the charging process is finish
Really? You clearly don't have a number of cameras that you use intensively - and a large number of batteries for them - and quite a few chargers-. ;) :ugeek:

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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 8:57 am 
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jaapv wrote:
elm70 wrote:

The main difference is that nobody would leave a hobby battery connected to the charger for days or even hours after the charging process is finish
Really? You clearly don't have a number of cameras that you use intensively - and a large number of batteries for them - and quite a few chargers-. ;) :ugeek:
But, looking at your signature, yours are not hobby batteries, are they? :P


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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 11:12 pm 
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Joined: Mon Sep 26, 2016 11:18 pm
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Location: Poland
jaapv wrote:
elm70 wrote:

The main difference is that nobody would leave a hobby battery connected to the charger for days or even hours after the charging process is finish
Really? You clearly don't have a number of cameras that you use intensively - and a large number of batteries for them - and quite a few chargers-. ;) :ugeek:


I guess you are not using a charger like this:

Image

https://hobbyking.com/en_us/turnigy-rea ... arger.html

Nor battery like:
Image

https://hobbyking.com/en_us/multistar-h ... ack-1.html


PS: I guess link of pictures don't work, since I bet there is a session ID inside the URL :?


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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Wed Nov 28, 2018 11:15 pm 
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anko wrote:
Unexpected (to me), very short after the charging process starts to taper off, pack and cell voltages are already at their maximums. But SoC is still 5% below max value.


I can't really see the picture attached above ...

So SOC is 95% when cell voltage reach 4.1v and charging current is declining ?
This looks relative normal


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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Thu Nov 29, 2018 12:51 am 
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Quote:
But, looking at your signature, yours are not hobby batteries, are they?

A bit out of control, but still a hobby, more or less. However, the distinction between advanced amateur and professional gear is negligible, if at all.

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 Post subject: Re: Drive battery degradation . Houston, do we have a proble
PostPosted: Thu Nov 29, 2018 9:58 am 
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How about these?

Image

Image


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