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0 pointsoverfeed1mo ago0 comments

I don't know why you prefixed with "Yet" when I clearly spelt out the trade-offs and contrasts in distribution between H2 and electricity.

The Mirai goes from empty to full in 5 minutes or less - which compares very well with fossil-fuel burners. Now that every OEM has abandoned battery-swapping, how fast can EV batteries be safely charged with the said 3 phases? How long were the charging time when the Mirai was debuted? That was the trade-off Toyota was hoping to fall on the good side of, nevermind the Japanese government bet on hydrogen and whatever incentives are available for Toyota.

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xxs1mo ago

>with "Yet" when I clearly spelt out the trade-offs

It was with regard that 800V was the driving factor, it'd be possible to have 'fast' charging earlier with existing infrastructure, even home.

>be safely charged with the said 3 phases?

The limiting factor for charging would be charging current in lots of cases. Getting 60% of 75kWh battery, it's 45kWh to charge in 20mins, the output should be ~150kW (90% efficiency) or 325A (on 400v), 4x 12-15mm wires.

Note about 'home' charging - three phase 32A is widely available domestically or around 6-8h to fully charge

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