Author Topic: EV Fast Chargers  (Read 4009 times)

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Offline sandalcandal

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Re: EV Fast Chargers
« Reply #25 on: June 28, 2021, 10:38:47 am »
You can have two coolant loops... It all depends on how much cooling performance is needed.
The cable posted by Mike has 1 supply coolant line and 2 return coolant lines.
It has non isolated loops.
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Offline mikeselectricstuff

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Re: EV Fast Chargers
« Reply #26 on: June 28, 2021, 11:25:12 am »
The cable posted by Mike has 1 supply coolant line and 2 return coolant lines. Also recommends 50-50 water-glycol coolant. Diagrams for cooling system also on product page.
[img]
https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1085642&library=gben&pcck=P-29-03-01-01&tab=1&selectedCategory=ALL

Presumably there is some barrier between the conductors and coolant.
Glysofor N is there because there is direct contact with metals...
Yeah, it's a corrosion inhibiting glycol based coolant, there's probably metal in the loop somewhere e.g. heat exchangers. Doesn't mean there's contact with the conductors otherwise electrolysis would probably be an issue at 1000VDC as mentioned.
You can have two coolant loops... It all depends on how much cooling performance is needed.
I suspect the twin return lines may be to do with the cable lay-up, maybe to allow a return line to be next to each DC core. The drawing in the Phoenix PDF shows the two returns joined at the charger end.
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Offline sandalcandal

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Re: EV Fast Chargers
« Reply #27 on: June 28, 2021, 11:31:25 am »
I suspect the twin return lines may be to do with the cable lay-up, maybe to allow a return line to be next to each DC core. The drawing in the Phoenix PDF shows the two returns joined at the charger end.
Diagrams also show three separate coolant tubes entering the cooling system. Unfortunately the public documentation is a bit sparse.
Disclosure: Involved in electric vehicle and energy storage system technologies
 


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