Tuesday 1 June 2021

CHAdeMO with two packs in parallel

To get quick charging going I should be able to just wire up the QC contactor to the paralleled packs and plug in the communication wires.

The QC cables come up on the bottom left of the image and bolt into the QC contactor.


Initially the quick charging port didn't initialise and after a lot of digging through the service manuals and trouble shooting I found the QC contactor relay to be faulty. After replacing it with a spare relay from the parts car CHAdeMO was working with the MiEV power box I was using to test the port.

Now that I knew the port was working I went for a drive to first drain the battery and test the quick charging.

Here you can see the Chademo is taking power in at 99A just below the 100A limit of the contactor, and the front pack is charging at about 49A.

All the systems seem to be ok with arround half of the energy coming in just disappearing! (into the rear battery pack)