> Background: The "official" CCS does not provide the possibility to draw energy out of the car.
Incorrect, and there is no need for this hackery. V2G over CCS2 was standardised in ISO 15118-20 for example when the OP wrote this
Well, yes and no. The original CCS spec (from circa 2013/14) in fact does not support energy export. The “-20” spec you referenced (2nd gen networking) was not published until 2022. So this feels like a bit of a gotcha!
Given the highly variable compatibility between cars and basic DCFC, I’m fairly skeptical of your claim that many cars correctly implement bidirectional CCS DC charging. In fact, I cannot name a single model which does.
For example, the F-150 Lightning supports DC power export, but only when commanded to do so over BLUETOOTH. Hyundai/Kia models export AC power through the charge port, but not DC. Lots of press releases from circa 2023 say the ID.4 will support bidirectional DC, but no follow up saying that feature has been delivered.
Perhaps you could name a few of the “a lot” of cars that support bidirectional DC natively from the factory using standard CCS methods?
-20 has been out for ages in the wild, nearly a decade, as a draft spec.
Both Tesla 3 and Hyundai Ioniq have supported DC Bidi for several years on the vehicle side — just finding a DC Bidi capable charger is difficult because they are still illegal in most countries due to lagging grid codes.
Yeah, I know Renault 5 E-Tech export power through their CCS port (V2G, V2L, V2X) but it seems to be AC only.
Edit: IMHO AC power-out is good, because it simplifies a lot plugging to car to your home or to some appliances, but I understand why you would want to access DC directly.
Comments
Well, yes and no. The original CCS spec (from circa 2013/14) in fact does not support energy export. The “-20” spec you referenced (2nd gen networking) was not published until 2022. So this feels like a bit of a gotcha!
Given the highly variable compatibility between cars and basic DCFC, I’m fairly skeptical of your claim that many cars correctly implement bidirectional CCS DC charging. In fact, I cannot name a single model which does.
For example, the F-150 Lightning supports DC power export, but only when commanded to do so over BLUETOOTH. Hyundai/Kia models export AC power through the charge port, but not DC. Lots of press releases from circa 2023 say the ID.4 will support bidirectional DC, but no follow up saying that feature has been delivered.
Perhaps you could name a few of the “a lot” of cars that support bidirectional DC natively from the factory using standard CCS methods?
-20 has been out for ages in the wild, nearly a decade, as a draft spec.
Both Tesla 3 and Hyundai Ioniq have supported DC Bidi for several years on the vehicle side — just finding a DC Bidi capable charger is difficult because they are still illegal in most countries due to lagging grid codes.
Yeah, I know Renault 5 E-Tech export power through their CCS port (V2G, V2L, V2X) but it seems to be AC only.
Edit: IMHO AC power-out is good, because it simplifies a lot plugging to car to your home or to some appliances, but I understand why you would want to access DC directly.