Interesting Battery info (e-book based around BMWi3)

[ian4x4]

I haven't fully read this yet, but it has enlightened me on a few EV car issues / answers.

https://issuu.com/brycheinsltd/docs/evs_and_i3

 

[PHEV07]

I haven't fully read this yet, but it has enlightened me on a few EV car issues / answerers.

https://issuu.com/brycheinsltd/docs/evs_and_i3

Lots of great info on the EV Operation and different types of Battery in use today.

Great find, thanks for posting this Link.

 

[greendwarf]

I haven't fully read this yet, but it has enlightened me on a few EV car issues / answerers.

https://issuu.com/brycheinsltd/docs/evs_and_i3

Lots of great info on the EV Operation and different types of Battery in use today.

Great find, thanks for posting this Link.

Yes - section 8 on battery life is interesting, as it points out that the faster the rate of discharge the shorter the battery life (if I understand it correctly :? ). This would reinforce the view that once you get above normal urban speeds you should hit Save rather than just drive on in EV until "flat". It makes little difference to economy but will extend the battery life.

 

[ian4x4]

I changed the title of this thread as I found the descriptions of things like battery life and why output is limited very interesting.

This goes a long way to explaining variations in battery range, for example I did not know that rate of discharge, alone, has a dis-proportional bad effect on available capacity. (like in use of heavy acceleration)

Also the relatively large amount of power used in passenger heating.

Interestingly it seems a larger capacity battery allows potentially better acceleration as the possible (non damaging) discharge rate increases.

Towards the end is a good 'water tank' analogy, explaining the problems that the ICE generator may have in providing sufficient power to keep the batteries topped up when faced with a hill.