You really cant discharge any 5+ah cell at 150a. Seriously you should aim at around a 3c max discharge. Not 60c, which is what you would have to achieve if your controller was pulling 300a under heavy load.
I found the government report for that vehicle - https://www.energy.gov/sites/prod/fi...yC-Max3817.pdf
It has a 7.6kW pack made out of 84 cells, with a 310.8v pack voltage (nominal) - it appears it's a 84s configuration, without anything paralleled. The doc the goes to state :
The Medium PHEV battery target performance goals of 37 kW discharge power and
25 kW charge power are shown as a dashed line.
So the pack is designed to discharge at up to 37kW. At nominal voltage that is 119.35A, which is the current on each cell due to pack's series configuration.
In my case there are 4 cells in parallel, meaning the pack is capable of handling at least ~480A of current. 119.35A though is likely not the cell rating,
and I am more inclined to think stated 150A by the seller is actually accurate, though I haven't found the official spec sheet from the Panasonic yet.
So the report above doesn't really stress peak vs continuous discharge, but I found another one :
This one uses 50.2kW figure for peak draw from the battery. Given the same configuration in 2013 vehicle, that's 161A draw per cell...
Basically, it is a certain different game here when relying on cells made for some electric vehicles with specs significantly exceeding the needs of the Ranger
due to sometimes order of magnitude more powerful drivetrains. One of the things I am trying to do here is to figure out a simple way of achieving the
conversion with reasonable results.
I also have another update on the project: just got the Lithium algorithms programmed into the charger. It now supports the following:
If anyone is interested in that, shoot me a message and I will share the contact info for the shop that does the programming.
With so many options it is now possible to chose between 12, 14 and 16 series configurations. Last one may require DC-DC converter replacement,
but apparently they can be had for as little as $80.
Good reminder about the crimps and stuff - I took certain calculated shortcuts, but I'm very diligent otherwise.