Details of BS7671:2018 Amendment 1 are here.

No, just a double insulated charger in the car.

Needs to rectify the mains, 4 diodes if 1 phase, 6 if 3 phase, some PFC electronics, probably active, so possibly multiples of  2fets and 2 inductors phased to give no dead gap - makes the RFI filters easier than having hard switching. This steps up the rectified sine onto a DC bus, perhaps 350 - 400V. (not perhaps built quite like  this one however  some folk have too much free time)


The DC bus smoothed and then fed to a large push-pull SMPS,  similar things exist already   wound on some bosky ferrite with the addition of an EMC catcher inter-winding screen connected to one side of the DC bus, and then  a layer of insulation that passes the class II pat test, and a secondary winding that is earthed to the car side . 

Could be made with a number of smaller transformers to make cooling easier. Multiples of 2/4/8 suit digital control and would allow optimum efficiency for both fast (perhaps 30kw ) and slow  (2-3 kW) charging by not bothering to waste energy to magnetise cores that are not needed.

All in a plastic enclosure about the size of a 2 shoe boxes with a one piece plastic snout  coming to a flap like a petrol filler for the charging lead.

No, just a double insulated charger in the car.

Needs to rectify the mains, 4 diodes if 1 phase, 6 if 3 phase, some PFC electronics, probably active, so possibly multiples of  2fets and 2 inductors phased to give no dead gap - makes the RFI filters easier than having hard switching. This steps up the rectified sine onto a DC bus, perhaps 350 - 400V. (not perhaps built quite like  this one however  some folk have too much free time)


The DC bus smoothed and then fed to a large push-pull SMPS,  similar things exist already   wound on some bosky ferrite with the addition of an EMC catcher inter-winding screen connected to one side of the DC bus, and then  a layer of insulation that passes the class II pat test, and a secondary winding that is earthed to the car side . 

Could be made with a number of smaller transformers to make cooling easier. Multiples of 2/4/8 suit digital control and would allow optimum efficiency for both fast (perhaps 30kw ) and slow  (2-3 kW) charging by not bothering to waste energy to magnetise cores that are not needed.

All in a plastic enclosure about the size of a 2 shoe boxes with a one piece plastic snout  coming to a flap like a petrol filler for the charging lead.