MME faster than 150kwh in future?

[AZBill]

No those EA just do 400v, the i5 architecture is 800v so it needs to convert EAs 400v to 800v.

False, all EA chargers support 920V. The older ABB units for 150kw only support 350A, the ABB chargers for 350kw support 400A, and the newer Signet units all support 500A.

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[skiingj]

In the ten or so EA charges (150-350) I've used around NorCal. The MME never gets above 40-50. What should I get?

 

[RedDragon]

I think the car has a hardware max current of 450 amp.

At 450A, and depending on the SoC when you plug in, you'll see a max around 165kw, maybe up to 170kw. As the SoC gets higher, the battery voltage goes up, and voltage x current = kw

At 375A which is what an EA 150kw station maxes out at, and what the 350kw units that are being limited are stuck at, about the highest you'll see is around 125kw.

Not clear if that 450amp is the actual max the hardware in the car can do or if its software limited. I think the max any charger goes to is 500amp, so if they could increase that to 500A, we could possibly see up to around 185kw.

Any higher and you'd need to get the battery voltage higher, and that would require a hardware change in the battery itself.

Do we know why other 400v architecture cars (Rivian, etc), can draw down peak charge rates around 200kwh and we can't? Is it bc our hardware can't support the additional amps to make this happen or is it just conservatism on battery warranty so Ford software limits the amp draw? It's just annoying that other 400v cars can charge faster than us....

 

[Mach-Lee]

Do we know why other 400v architecture cars (Rivian, etc), can draw down peak charge rates around 200kwh and we can't? Is it bc our hardware can't support the additional amps to make this happen or is it just conservatism on battery warranty so Ford software limits the amp draw? It's just annoying that other 400v cars can charge faster than us....

Rivan uses a slightly higher battery pack voltage than us (about 16% higher) and they allow 500 amps continuous for quite a long time while charging. Our charge curve only seems to allow about 225 amps continuous during the bulk phase. That's likely due to hardware limitations (wire and busbar sizes), and out of Ford's concern for maintaining the pack warranty.

There is certainly room for improvement in the charging curve, I would like to see a good 300 amps continuous (low 100's kW).

 

[Johnny572]

Does anyone know if Ford has any plans to program MME to charge faster than 150kwh in future? It would be great if we could really utilize the 350kwh chargers I've been seeng at Electrify America stations.

EvGo by me has 2 100 kWh and 2 350 kWh stations….I use the 350…… just install 350 only………..then it wouldn’t be an issue.

Does anyone know if Ford has any plans to program MME to charge faster than 150kwh in future? It would be great if we could really utilize the 350kwh chargers I've been seeng at Electrify America stations.

peak power is great but short lived with all EVs. I wish Ford would improved the total charging curve. They improved 80 to 100 it was a great start.

 

[AlpaChino]

EA allows you to download the data. Back in 2021, every session for a 150kW station showed a max of 175, and 350s showed a max of 207. Clearly BS data.

I just did a trip and always used a 350kW station. Max rates were 164.6, 159.7, 155.8, 165.8, 149.8, 163.3, 123.6.

So you're the guy that everyone over on the taycan forum complains about! ?

 

[Shayne]

peak power is great but short lived with all EVs. I wish Ford would improved the total charging curve. They improved 80 to 100 it was a great start.

For me it was 12 KW 80 to 90% to start then it went up to 45 kw now it is sitting at around 33 kw. I guess that is a great start? ?‍

 

[Johnny572]

For me it was 12 KW 80 to 90% to start then it went up to 45 kw now it is sitting at around 33 kw. I guess that is a great start? ?‍

All EVs slow down after 80% SOC

 

[BigMach-E]

Considering the fact that I haven’t peaked above 115 ever, I’ll take 150 any day.

 

[AllenXS]

I haven’t bothered to check the charge rates but when I’ve been on the 350kw (no 150s free), I find the charging time so much quicker. I’ll do some recording one day and compare.

 

[silverelan]

EA 150kWh stations do output 150kWh according to the Ionic 5 I've borrowed. Are you sure MME only get 125kWh at EA 150kWh stations?

It’s not precise but…

150kW = 200 horsepower
150kWh = two MME SR battery packs

the two are easily confused but shouldn’t be conflated.

 

[silverelan]

There is certainly room for improvement in the charging curve, I would like to see a good 300 amps continuous (low 100's kW).

i would definitely trade 150kW+ peak charging for 30 mins of charging from 350A tapering down to 300A, and then settling lower to 225A the rest of the way to 80%.

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