HHL wrote:I wonder if this "smoothing" is really just a way to re-synch what the BMU stored battery capacity is, by performing a more detailed measurement than the normal charge/discharge cycle can do, to try and establish the actual condition and set the BMU to that.
My car has undergone this procedure twice, and both times I have experienced an increased range and observed an increase amount of kWh going through the charge station during a full charge.
HHL wrote:One thing I find interesting is the charge level vs battery voltage seems to be quite pessimistic. I have just done a reading and EVBATMON says SOC 26% while the battery voltage is 304.8 (3.81V per cell). Unless the chemistry in these batteries is very different from other Li-Ion cells, this cell voltage would suggest a real charge level of close to 40%.
Maybe there is a large chunk of unusable capacity 'at the top'. If the BMU takes that into account, the reported SOC could deviate from the actual SOC. Although, it would require a 18.5-ish kWh battery for these numbers to match up.
HHL wrote:According to the manual, when the battery is depleted the engine will start at around 27% and stop again at 32%, thus cycling all the time in hybrid mode in slow driving.
The cycle is much shorter and depends on your speed (and whether the engine already had a chance to warm up). Typical, a high speed cycle is (from the top of my head) 30.5% - 32% and a low speed cycle is approx. 27% to 28.5%. But when driving really slow you can go as low as 25.5% (or even a bit lower when the last part of your trip is in reverse, I noticed yesterday). So, there are several different cycles, but to the best of my knowledge, 27% - 32% is not one of them. Unless you would speed up in the middle of a cycle. But I cannot imagine they would put that in the manual