I still find the older term vehicle-to-grid more useful here. The idea of the default being grid-to-vehicle but at some point a vehicle knows it is sitting long enough it can "loan" power back to the grid.
Communication needs to be involved (the vehicle has to switch "modes", the vehicle needs to negotiate the "terms" of the loan, such as that it needs to be 100% by a certain deadline such as "school pickup" or "end of workday", what sort of "interest" it expects back on the loan), but the interesting part is the power delivery that opens up. It can help grid operators smooth high demand periods. It can help vehicles spend less time at 100% charged and focus more on "charged just in time", now that we have a better idea about Lithium Ion batteries that time spent in 100% charged states are some of their worst wear and tear.
V2X is kind of the "IOT" meets "USB Power Delivery" next layer on top of V2G. It seems a lot more bogged down in the communications side of it because "everything" can mean a lot of things, but the overall goal of all that communications is still moving power from a battery to somewhere else over time (while also making concessions to get power back into that battery at a later time).
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I still find the older term vehicle-to-grid more useful here. The idea of the default being grid-to-vehicle but at some point a vehicle knows it is sitting long enough it can "loan" power back to the grid.
Communication needs to be involved (the vehicle has to switch "modes", the vehicle needs to negotiate the "terms" of the loan, such as that it needs to be 100% by a certain deadline such as "school pickup" or "end of workday", what sort of "interest" it expects back on the loan), but the interesting part is the power delivery that opens up. It can help grid operators smooth high demand periods. It can help vehicles spend less time at 100% charged and focus more on "charged just in time", now that we have a better idea about Lithium Ion batteries that time spent in 100% charged states are some of their worst wear and tear.
V2X is kind of the "IOT" meets "USB Power Delivery" next layer on top of V2G. It seems a lot more bogged down in the communications side of it because "everything" can mean a lot of things, but the overall goal of all that communications is still moving power from a battery to somewhere else over time (while also making concessions to get power back into that battery at a later time).