cwerdna
Posts: 10759
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: V2H through ChadeMo port

Sat Aug 01, 2020 10:46 pm

Icarus wrote:
Sat Aug 01, 2020 8:33 pm
Charging of the Leaf would occur via the CCS port (but not at the same time!). Hopefully I'm not displaying my complete 'dumb' ignorance on the subject, but I need to start researching somewhere.
What CCS port? Leafs don't have CCS.

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Icarus
Posts: 6
Joined: Fri Oct 16, 2015 4:30 pm
Delivery Date: 16 Oct 2015

Re: V2H through ChadeMo port

Sat Aug 01, 2020 10:58 pm

cwerdna wrote:
Sat Aug 01, 2020 10:46 pm
What CCS port? Leafs don't have CCS.
The Type 1 / J1772.

User avatar
Marktm
Gold Member
Posts: 568
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

Re: V2H through ChadeMo port

Sun Aug 02, 2020 5:47 am

Icarus wrote:
Sat Aug 01, 2020 10:10 pm
Thanks. I've looked a bit closer at the schematic on the previous page.

System Main Relay 1 and System Main Relay 2 seem to be accessible via the connection points on Pins 14 and 17 of the battery interface. Would it be feasible to parallel an appropriate voltage onto those pins to activate the relays? Thus bypassing the handshake protocols?

Please keep in mind the 'use case' for the CHAdeMO port is discharge only. The solar inverter load would be self-regulating to a maximum of 5.2kW discharge. I don't need or intend to use the CHAdeMO port for charging.

I anticipate I would modify the CHAdeMO port to be a simple physical interface only for connection to the Leaf. ie. I've watched a video where the main DC cables are spliced into a 'Y's at the battery connection point and bypass the DC\DC Junction Box.
I had similar thoughts of tapping into the heater circuit when I purchased my leaf with a scheme of charging via the on board charger and discharging (in emergency) via the approx 10 kW heater circuit that is protected by it's own fuse. Physically, it seemed quite simple and living in south TX, I could modify/remove the heater as I never use it anyway. I've done something conceptually similar with my "PriUPS" system using the "big" high voltage UPSs. Issues included the energy draw leaving the Leaf in standby mode - and - I liked the Leaf so much, I decided not to take the chance of "bricking" it. Waiting on a commercial V2G/V2H unit :mrgreen:
2012 Leaf SL; 46,000 miles. Battery replaced November 1st, 2016.

WetEV
Posts: 3808
Joined: Fri May 04, 2012 8:25 am
Delivery Date: 16 Feb 2014
Location: Near Seattle, WA

Re: V2H through ChadeMo port

Sun Aug 02, 2020 6:20 am

Icarus wrote:
Sat Aug 01, 2020 10:58 pm
The Type 1 / J1772.
J-1772 doesn't do bi-directional.
WetEV
#49
Most everything around here is wet during the rainy season. And the rainy season is long.
2012 Leaf SL Red (Totaled)
2014 Leaf SL Red
2019 eTron Blue

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