How about a limited battery that occupies the frunk and is based on a chemistry unlike the main battery?
Prior to owning a MS, I owned a Chevy Volt for 4 years. That car would regen regardless of the temperature. Of course the car would quietly charge only to about 80% and then report full, so any regen at the start of a topped-off trip would have 'somewhere to go'.
But, even with zero degree weather, the battery would still take the regen charge.
I started thinking;
Why not have a separate battery - with chemistry similar to the Chevy Volt battery? Locate that battery in the frunk. It's primary function is to take ALL regen and then meter its energy out to the main battery.
This way, regen functionality would be consistent, regardless of temperature conditions?
I would guess that a 5kW battery would be more then enough. My Volt had a 10kW battery as it's only battery and would give me almost 50 miles. Judging that it was 'secretly' charged to 80% max, that leaves roughly 2kW of reserve storage on the top end. Since regen never filled it, I have to deduce that I never put in more than 2kW of regen. So 5kw seems very reasonable. If weight, were an issue, even a 3kW battery would work?
Okay, I'm ready for your "hole poking"
Prior to owning a MS, I owned a Chevy Volt for 4 years. That car would regen regardless of the temperature. Of course the car would quietly charge only to about 80% and then report full, so any regen at the start of a topped-off trip would have 'somewhere to go'.
But, even with zero degree weather, the battery would still take the regen charge.
I started thinking;
Why not have a separate battery - with chemistry similar to the Chevy Volt battery? Locate that battery in the frunk. It's primary function is to take ALL regen and then meter its energy out to the main battery.
This way, regen functionality would be consistent, regardless of temperature conditions?
I would guess that a 5kW battery would be more then enough. My Volt had a 10kW battery as it's only battery and would give me almost 50 miles. Judging that it was 'secretly' charged to 80% max, that leaves roughly 2kW of reserve storage on the top end. Since regen never filled it, I have to deduce that I never put in more than 2kW of regen. So 5kw seems very reasonable. If weight, were an issue, even a 3kW battery would work?
Okay, I'm ready for your "hole poking"