Saturday 29 August 2020

Slowly making progress: August update

Things have been moving slowly on this project recently with Uni and two part-time jobs getting in the way, but I have managed to get some things tidied up and finished off.

I have re-installed the previous owners conduits under the car as they do not conform with current New Zealands LVVTA EV certification guidelines anymore as the old conduit was plain white and had both the positive and negative HV wires running through a single conduit which is a big no no. The new certification guidelines state positive and negative HV cables must be run through separate conduits and must be orange in colour, or obviously indicate there are HV cables inside with warning labels for example.

Old:

This is the old single conduit (folded in half), you could not see the orange cables at all when it was installed and nothing on the conduit indicated HV wires were running through it.

New:


Although the whole conduit is not orange, in my opinion it is very easy to tell HV wires run through these conduits, although I may wrap the white flexible conduit in orange electrical tape just to be sure. There are now three conduits run, one each for the positive and negative HV cables and one for the AC (slow) charging cable.

Speaking of AC charging, here is the J1772 port from the iMIEV bolted to the car with enough clearance to close the "fuel door"

This is my mock-up of the front battery setup. I am planning to have everything bolted in place with a custom shaped fiberglass mold over the top to prevent the HV terminals touching the hood if someone stands on it or something stupid. The HV cables that lead to the huge Anderson connector off to the right will eventually run through the conduits to the rear of the car where the second paralleled pack will be. 

I also mocked up the cooling hoses and decided to use the heaters coolant reservoir instead of the main one due to the more convenient size.

I have also tidied up the wiring in the engine bay by wrapping all of it in black electrical tape, if you look at previous photos of the engine bay this looks much cleaner.


Version 1 of the circuit diagram for the car. I feel like it's pretty simple for a whole electric car to be honest as I have left all the iMIEVs brains in boxes for this diagram and only shown the main circuits and ones I've actually made/altered. (Pre-charge resistor value is not correct)