Mach E web series Part 4 - Performance and Charging

[SnBGC]

My Leaf recharges the 12V battery at up to 1kW. What’s the power rating of the converter that charges the 12V battery from the high voltage battery on the Mach E?

I currently can use our Leaf to power critical home systems (computer, router, freezer, a few lights) in case of a power outage. I use a 1kW DC/AC inverter. Can the Mach E accommodate 1kW? More?

Let me see if I can find the wattage of that converter for you.....
I would guess it is different from the FFE because the MME likely has more power demands on the LVB but I never thought to look into that.

Sponsored

 

[ChasingCoral]

Let me see if I can find the wattage of that converter for you.....
I would guess it is different from the FFE because the MME likely has more power demands on the LVB but I never thought to look into that.

Thanks!

 

[jhalkias]

It can not hold 150kW to 80%. Period, full stop. Not even close.

I'm curious as to how you know that - especially the "not even close" part. See the attached article about the Audi Etron charging curve. It holds between 140KW and 150KW up to 80%. I listened to a podcast recently that said that is perhaps partially due to the large buffer in the Etron. The ME also has a large buffer, and that excited me to think it may have a similar charging curve and similar performance in charging. You may end up being correct, but I think it is premature until we see the charging curve. It is not impossible.

https://electrek.co/2019/05/15/audi-vs-tesla-supercharger-v3/

 

[Woeo]

@dbsb3233 , have you had your mind changed yet on the 61 miles/10 minutes (52 for AWD) being the average over the charging session and not just the first ten minutes?

Not going to be the average over the charge.

Ford Says:

‘With available 150 kW chargers in the FordPass™ Charging Network, the Mustang-inspired all-electric SUV can charge an estimated average of 61 miles of range in approximately ten minutes, and from 10-80% in 45 minutes.’

70% of the targeted 300 mile range would be ~210 miles over 45 minutes. 46.67 miles per 10 minutes on average.

Likely 61 in the first ten, 52 in the next, 44 in the next, 39 the next and 14 in the next 5.

 

[ajmartineau]

I'm curious as to how you know that - especially the "not even close" part. See the attached article about the Audi Etron charging curve. It holds between 140KW and 150KW up to 80%. I listened to a podcast recently that said that is perhaps partially due to the large buffer in the Etron. The ME also has a large buffer, and that excited me to think it may have a similar charging curve and similar performance in charging. You may end up being correct, but I think it is premature until we see the charging curve. It is not impossible.

https://electrek.co/2019/05/15/audi-vs-tesla-supercharger-v3/

I spent countless hours tracking down someone from Ford who would know. Ford is being conservative with its 20-80%. They aren't doubling them.

 

[silverelan]

Not going to be the average over the charge.

Ford Says:

‘With available 150 kW chargers in the FordPass™ Charging Network, the Mustang-inspired all-electric SUV can charge an estimated average of 61 miles of range in approximately ten minutes, and from 10-80% in 45 minutes.’

70% of the targeted 300 mile range would be ~210 miles over 45 minutes. 46.67 miles per 10 minutes on average.

Likely 61 in the first ten, 52 in the next, 44 in the next, 39 the next and 14 in the next 5.

If the range is 300 miles, you'd be right but Ford teased yesterday that the RWD EX actually gets 358 miles of range.

358 x 70% = 250 miles

61mi / 10 minutes average fits.

 

[kdryden99]

The interesting thing is they keep on talking about Michigan, nothing against Michigan but your cold testing in Michigan cannot compare to the temps we get in Northern Quebec

 

[pb3]

Not sure who's question this was but maybe I can help....
Heat pumps are not the most efficient way to cool the battery. The air conditioner compressor chills the coolant which circulates through the battery tray.

I hope this helps.

It was my question. Thanks for the answer, which I'm still a bit fuzzy on. ?

Are you saying that, under certain circumstances, "scavenged" heat from the high voltage battery thermal management system "can be" available to the cabin heat loop?

I understand all the other stuff, e.g. this only works in a relatively narrow range of ambient temperature conditions. Also, that using the seat heaters is more energy efficient than using whole cabin heating.

On the central California coast, we rarely get below freezing, so most calls for cabin heating would be between outside temperatures of 32-60°F.

 

[kdryden99]

It was my question. Thanks for the answer, which I'm still a bit fuzzy on. ?

Are you saying that, under certain circumstances, "scavenged" heat from the high voltage battery thermal management system "can be" available to the cabin heat loop?

I understand all the other stuff, e.g. this only works in a relatively narrow range of ambient temperature conditions. Also, that using the seat heaters is more energy efficient than using whole cabin heating.

On the central California coast, we rarely get below freezing, so most calls for cabin heating would be between outside temperatures of 32-60°F.

Yes there is a valve system that opens up to warm the car but not meant really for really low temps

 

[Woeo]

If the range is 300 miles, you'd be right but Ford teased yesterday that the RWD EX actually gets 358 miles of range.

358 x 70% = 250 miles

61mi / 10 minutes average fits.

Watched the same thing. I heard Darren say EPA would be “over 300 miles”. What is the time stamp where someone says 358?

 

[silverelan]

Watched the same thing. I heard Darren say EPA would be “over 300 miles”. What is the time stamp where someone says 358?

Ron Heiser & Co. had this screen up for ten minutes. 280 miles of range @ 78% SoC.

They could have blanked this out but they didn't.

 

[ajmartineau]

I do that same calculation every time I see the range/percentage of the MME.

 

[kdryden99]

What I understand is that the range is dependent from outside temp, how you drive and it will give you the range you have from comparing numbers and doing the math for you from the cloud, so your range varies. So even though you know the max range you can have, you wont know the real range you have until the car tells you

Thats crazy

Darren also suggests charging every day, Ron said charging everyday on a L2 everyday is no issue

 

[silverelan]

I do that same calculation every time I see the range/percentage of the MME.

The clues are piling up that EPA and WLTP ranges will be somewhat close and they'll exceed the target EPA range specs announced in November. The implication of this is in the charging speed.

61 RWD or 52 AWD / 10 minutes is the average and not the best ten minutes of the charging session.

 

[ChasingCoral]

Ron Heiser & Co. had this screen up for ten minutes. 280 miles of range @ 78% SoC.

They could have blanked this out but they didn't.

True but simulated screens are far from an intentional tease. Darren's interview last week explicitly saying well over 300 miles is quite different. I'm hopeful but won't bet on it.

Sponsored