I'd like to use my leaf as a backup emergency power source instead of my generator since it's silent, odourless, cheaper and more convenient. As the leaf doesn't have a 240V outlet like some newer EVs, and since 240V converters that are powered directly from the 400V traction battery via the CHAdeMO port are prohibitively expensive and not easy to buy, the most feasible way to take power from the leaf seems to be via the 12V battery, which is charged from the 400V traction battery by an onboard DC-DC converter that's rumored to have a maximum external load capacity of 1500W (2000W max output minus 500W of the car's own internal 12V loads).
I plan to use a large (100Ah) battery as a buffer between the leaf and the inverter. So the power flow would be something like this:
Leaf's onboard 12V battery -> Jump leads -> 100Ah buffer battery -> 5000W inverter -> house
Is there a way I can configure this circuit to limit the draw on the leaf's DC-DC converter to only 1500W (about 135A)? The only house load that will actually go over this figure is the microwave (1700W at the plug) but that only works for 30 seconds at a time. I'm hoping that the jump leads will have enough resistance such that the buffer battery and leaf battery will supply at least 200W to the inverter while the microwave is running (meaning only 1500W from the DC-DC converter), but I'm open to any suggestions regarding the whole idea. The top priority is to protect the leaf's DC-DC converter from overload or electrical noise since it's expensive and labour-intensive to replace.
On a related note, my spouse has a second Leaf. Is there a way to parallel them safely so each Leaf only delivers about half the load? I'm not sure whether simply connecting the jump leads across the internal 12V batteries would cause unintended large current flows between that could damage the converters.
I plan to use a large (100Ah) battery as a buffer between the leaf and the inverter. So the power flow would be something like this:
Leaf's onboard 12V battery -> Jump leads -> 100Ah buffer battery -> 5000W inverter -> house
Is there a way I can configure this circuit to limit the draw on the leaf's DC-DC converter to only 1500W (about 135A)? The only house load that will actually go over this figure is the microwave (1700W at the plug) but that only works for 30 seconds at a time. I'm hoping that the jump leads will have enough resistance such that the buffer battery and leaf battery will supply at least 200W to the inverter while the microwave is running (meaning only 1500W from the DC-DC converter), but I'm open to any suggestions regarding the whole idea. The top priority is to protect the leaf's DC-DC converter from overload or electrical noise since it's expensive and labour-intensive to replace.
On a related note, my spouse has a second Leaf. Is there a way to parallel them safely so each Leaf only delivers about half the load? I'm not sure whether simply connecting the jump leads across the internal 12V batteries would cause unintended large current flows between that could damage the converters.