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Marktm
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Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Single phase CHADEMO at reduced charge rate. Possible???

Fri Jun 09, 2017 2:22 pm

johnr wrote: I use a J1772 adapter at charging stations to double the speed, pulling 6.6KW even though my car's onboard charger is limited to 3.3.


I've been looking at the Setec Power unit - do you think they are the manufacturer of your unit? They do look similar.
http://www.setec-power.com/product/278603-3069417.html



How do you use the J-1772 "adapter" to bypass the onboard charger?
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

wmcbrine
Posts: 91
Joined: Sun Aug 09, 2015 3:23 am

Re: Single phase CHADEMO at reduced charge rate. Possible???

Sat Jun 10, 2017 9:39 am

Marktm wrote:How do you use the J-1772 "adapter" to bypass the onboard charger?

EVSE -> adapter -> portable charger -> CHAdeMO -> car

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Marktm
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Posts: 324
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Single phase CHADEMO at reduced charge rate. Possible???

Sun Jun 11, 2017 6:21 am

wmcbrine wrote:
Marktm wrote:How do you use the J-1772 "adapter" to bypass the onboard charger?

EVSE -> adapter -> portable charger -> CHAdeMO -> car


Thanks - the actual adapter:

https://www.evseadapters.com/collections/ev-chargers-and-evses/products/j1772-to-14-50-adapter

I'd guess this is a clever use of the J-1772 protocols to allow the quick charger to actually generate the PWM signal equivalent to the max amperes (at 240 VAC split phase) that the DC quick charger can handle)?
Can someone with such expertise confirm this?
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

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TonyWilliams
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Location: San Diego
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Re: Single phase CHADEMO at reduced charge rate. Possible???

Sun Jun 11, 2017 7:45 pm

Marktm wrote:
wmcbrine wrote:
Marktm wrote:How do you use the J-1772 "adapter" to bypass the onboard charger?

EVSE -> adapter -> portable charger -> CHAdeMO -> car


Thanks - the actual adapter:

https://www.evseadapters.com/collections/ev-chargers-and-evses/products/j1772-to-14-50-adapter

I'd guess this is a clever use of the J-1772 protocols to allow the quick charger to actually generate the PWM signal equivalent to the max amperes (at 240 VAC split phase) that the DC quick charger can handle)?
Can someone with such expertise confirm this?


No, it's not that clever. They are putting a resistor on the pilot signal to make the J1772 EVSE think it's plugged into a car. The EVSE is on with the safety protocols defeated.

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Marktm
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Posts: 324
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: Single phase CHADEMO at reduced charge rate. Possible???

Mon Jun 12, 2017 6:38 am

TonyWilliams wrote:
Marktm wrote:
wmcbrine wrote:EVSE -> adapter -> portable charger -> CHAdeMO -> car


Thanks - the actual adapter:

https://www.evseadapters.com/collections/ev-chargers-and-evses/products/j1772-to-14-50-adapter

I'd guess this is a clever use of the J-1772 protocols to allow the quick charger to actually generate the PWM signal equivalent to the max amperes (at 240 VAC split phase) that the DC quick charger can handle)?
Can someone with such expertise confirm this?


No, it's not that clever. They are putting a resistor on the pilot signal to make the J1772 EVSE think it's plugged into a car. The EVSE is on with the safety protocols defeated.


Tony - does this mean that the ampacity of the EVSE/cabling itself is communicated properly to the QC so that if the QC was sized above the EVSE's capacity It would still limit charge power for safe EVSE operation?
2012 Leaf SL; 34,000 miles. 12 bars - Battery replaced November 1st, 2016.
4000 watts Grid-tied solar. 3000 watts (level II) off-grid solar Leaf charging capable.

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