Toyota has stepped up lobbying to preserve its investments in hybrids, hydrogen

Re:Toyota has stepped up lobbying to preserve its investment... by throw0101a on Wednesday July 28, 2021 @11:28AM (#27984962)

> I wonder if these arguments take into account decreased battery life with a smaller battery in a plug in hybrid.

I would think that it would be primarily a function of how much of the battery is treated as a 'reserve'. If you have 10-20% set aside that is not "useable", regardless of total capacity, then you could get similar cycles.

There's also the possibility for using super-caps taking some of the brunt for high discharge (2-4s) events which could help with longevity. How expensive are they for these type of use case?

[ Parent | on HN ]

Re:Toyota has stepped up lobbying to preserve its investment... by nkingsy on Wednesday July 28, 2021 @03:17PM (#27988371)

80-20 cycling is important, but discharge rate is as well.

If each cell in a 15kw battery discharges at 1c to move a car, each cell in a 45kw battery discharges at .33c.

Same goes for charging.

Might be diminishing returns, but discharge rates over 1c harm longevity.

https://www.osti.gov/servlets/purl/1397110

[ Parent | on HN ]