From: Christopher Darilek:
I'm ready to upgrade my charger connector... My charge rate is 18A
@100V. I think I need 5 connections: +100V, battery ground, +12V,
chassis ground, and BMS output to turn the charger Off. I'd like
for the connector to be accessible without opening the hood. What
do ya'll use? Any ideas? Ahhh, I should have added that my charger
is a big honkin' off-board transformer.
Peri Hartman wrote:
Whoa. Using a J1772 with a nonstandard connection could be
dangerous... sooner or later, someone else could make a mistake and
plug in some other ESVE and create a disaster.
I agree. Unless you can make your charging setup compatible with J1772,
then don't use the J1772 connector.
But, this isn't completely out of the question. You have a big external
transformer. Nothing says you can't keep it in the garage, and run its
AC output to the J1772 power pins. This would require putting the bridge
rectifier in the car. Then it only takes a little logic on the J1772
control pins to make it generate and recognize the simple PWM
diode-resistor setup.
That said, there are better solutions than the J1772. Look at the
Anderson PowerPole connectors:
https://en.wikipedia.org/wiki/Anderson_Powerpole
This is a modular, high-current high-voltage DC-rated connector system
that is widely used in industrial EVs for charging connectors. They are
available in many sizes, from little 15amp ones to big 350amp versions.
The individual contact housing slide together to create multi-pin
connectors of any configuration. Best of all, they only cost a few
dollars per pin.
--
Engineers like to solve problems. If there are no problems handily
available, they will create their own problems. -- Scott Adams
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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