ron_b
Well-Known Member
- First Name
- Ron
- Joined
- Dec 30, 2019
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- Location
- SF Bay Area, USA
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- 2020 Taycan 4S
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- #1
I have been thinking about the 270kW rate vs the initial stated 350kW rate and I think I understand what happened but was looking for other Electrical Engineer types to weigh in.
when I look at the product sticker on the side of the Electrify America Chargers I see a maximum voltage of 1000 volts and a maximum current of 350 amps. so that imply is that the only way to get 350 kilowatts is to be able to accept 1000 volts, whereas the Taycan battery is approximately 800 volts. Looking at 800V*350A = 280kW. Was wondering if people in Europe can grab an image of the normal Ionity chargers there to see if they also have the 350 amp limit.
This would imply to exploit the full 350kW the car would need a DC-DC converter to step down the 1000VDC which then also has its own inefficiencies.
Alternatively as spoken in the article new chargers &cables may support up to 500 amps; however, I'm not sure what the cable current rating is within the Taycan nor the CCS plug as those would also limit the current.
Related Articles:
charging will require a new generation of cables—and cable cooling
https://www.greencarreports.com/new...-a-new-generation-of-cables-and-cable-cooling
and
prototype that will charge faster than its 350-kw Taycan
https://www.greencarreports.com/new...hat-will-charge-faster-than-its-350-kw-taycan
Slightly off topic, I was trying to find any international standards specs on the Tesla plug. For the V3 superchargers to deliver 250kW at 400V it would imply 625A continuous current. That seem phenomenally high for that small plug even with liquid cooling.
when I look at the product sticker on the side of the Electrify America Chargers I see a maximum voltage of 1000 volts and a maximum current of 350 amps. so that imply is that the only way to get 350 kilowatts is to be able to accept 1000 volts, whereas the Taycan battery is approximately 800 volts. Looking at 800V*350A = 280kW. Was wondering if people in Europe can grab an image of the normal Ionity chargers there to see if they also have the 350 amp limit.
This would imply to exploit the full 350kW the car would need a DC-DC converter to step down the 1000VDC which then also has its own inefficiencies.
Alternatively as spoken in the article new chargers &cables may support up to 500 amps; however, I'm not sure what the cable current rating is within the Taycan nor the CCS plug as those would also limit the current.
Related Articles:
charging will require a new generation of cables—and cable cooling
https://www.greencarreports.com/new...-a-new-generation-of-cables-and-cable-cooling
and
prototype that will charge faster than its 350-kw Taycan
https://www.greencarreports.com/new...hat-will-charge-faster-than-its-350-kw-taycan
Slightly off topic, I was trying to find any international standards specs on the Tesla plug. For the V3 superchargers to deliver 250kW at 400V it would imply 625A continuous current. That seem phenomenally high for that small plug even with liquid cooling.
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