BYD 1000kW Chargers

[GranTurismoEra]

BYD chargers are as fast as petrol pumps – here’s the UK launch date

Ultra-fast 1,000kW Flash Chargers set to roll out in the UK from next year, if your car can handle the power

www.independent.co.uk

 

[MG Clive]

I can't see that being any good for battery longevity, but I'm sure BYD will do plenty of testing.

 

[Everest]

Makes good headlines and no-doubt will influence some sales. The 1000A charging leads will be meaty!

IIRC, existing CCS connectors are only good for 500A, so sounds like they'll need to be a new connector design coming (or parallel two existing ones). And the charging stations will need to be close to the national grid connections.

I can't see that being any good for battery longevity

10C rate charging sounds a lot to me, even for LFP, but if anyone can master that it will be BYD. But it looks doable (as in having 64% capacity retention after 1200 charges) according to this study...

https://www.sciencedirect.com/science/article/abs/pii/S1385894725010952

 

[Coulomb]

I find it hard to believe that they can get the connectors and even the cable (as Everest mentioned above) to handle 1000 A (1000 kW = 10⁶ W = 1000 V x 1000 A!). The connector is a sliding contact by mechanical necessity. Having that maintain milli-ohm resistance (each milli Ohm is a volt of voltage drop at 1000 A, which at 1000 A is 1000 W!!) will be an amazing challenge, especially long term. They may need exotic materials, like rhodium, which have limited supply; rhodium is currently rarer than gold or platinum.

Mind you, I don't see how they can manage 500 A either, and that's necessary for the present 350 kW chargers (700 V x 500 A = 350 kW).

 

[Everest]

Maybe have CCS version 3.0 which has 4 pins instead of two, handling 500A each?

 

[mg4mc]

Mind you, I don't see how they can manage 500 A either, and that's necessary for the present 350 kW chargers (700 V x 500 A = 350 kW).

Aren't they 800 V systems which = 438 A - still a lot!

 

[Everest]

Aren't they 800 V systems

Not sure what your pronoun is referring to

 

[siteguru]

I think it's aimed at @Coulomb's 350kW calculation.

 

[Bam Bam]

Aren't BYD using 2 separate ports to achieve the MW?

So you take up two chargers, if there are two available.

There are meatier truck chargers being developed that would do a MW or more. Needs serious cooling though.

 

[Everest]

Aren't BYD using 2 separate ports to achieve the MW?

No idea... it was just a guess when I said...

(or parallel two existing ones)

 

[Gadget Geek]

I still think NIO have a good system where they swap the battery. Each pack can be slow charged whilst it's in the station, and instead of paying for kWh's through a CCS, you pay for the charge in the battery. No concerns about battery degredation, and you can select a small capacitiy for day to day use, or a large capacity for a road trip.

A good option for petrol heads who complain about charging times, (not that they have ever charged an EV).

The only drawback is that NIO would have to have thousands of charge stations around the country to make it viable.

 

[Everest]

A good option for petrol heads who complain about charging times, (not that they have ever charged an EV).

You say that, but IIRC on one of Bjorns video's it still took about 12 mins for a swap, which is not that much faster than a 20 - 80% charge that the 800V GMP platform can achieve?

 

[m4rmite]

Aren't BYD using 2 separate ports to achieve the MW?

So you take up two chargers, if there are two available.

I thought the same, so tried looking for a video showing 2charge plugs in action to get the 1000kw charging.

But i failed

 

[MG Clive]

 

[Everest]

 

[Gadget Geek]

You say that, but IIRC on one of Bjorns video's it still took about 12 mins for a swap, which is not that much faster than a 20 - 80% charge that the 800V GMP platform can achieve?

And on another of his videos it took 5 minutes. Still easier than having to get out of the car in the snow and rain and plug in.

 

[Bam Bam]

I thought the same, so tried looking for a video showing 2charge plugs in action to get the 1000kw charging.

But i failed

I think I've got to the bottom of this.

The two new cars DO offer 'dual gun' so you can plug in on both sides to get higher speeds.

However, this is just for where there is no megawatt charger but two 250kws...
"In order to maximize charging speeds for the times when a full-blown Megawatt charger isn't around, the Han L and Tang L carry two DC fast-charging plugs, and they can use both at the same time. This setup "can instantly transform existing supercharging piles into flash charging ones and fast charging piles into supercharging ones," as BYD puts it."

 

[Everest]

LOL - that will go down well when there's a queue for chargers and "BYD-guy" is hogging two of them

 

[MG Clive]

LOL - that will go down well when there's a queue for chargers and "BYD-guy" is hogging two of them

But I suppose he'll only be hogging them for a few minutes.

 

[decrep]

Check the cable thickness, can that really deliver 1000kW?