ElectricVehicle
Well-known member
- Joined
- Jul 15, 2010
- Messages
- 631
I'm really struggling with the idea of Quick Charging. The expense of day time electricity and more importantly to me - the slight degradation to battery life from Quick Charging, means that I'll always take my Prius for trips over 150 miles round trip. (And the onboard 3.3 kW charger is too whimpy to get me to 100% charge in 5 hours - so you need the QC to make for the whimpy 3.3 kW onboard charger - 6.6 or 10 kW onboard would get to 100% while you are doing your half day vacation outing, meeting, etc... but with our current LEAFs we have to use QC even for that!)
The biggest problem is the slight degradation to battery life from Quick Charging.
At 65 mph, you get about 75 miles from a full charge. Allow 5 miles of range to get to your nearest Quick Charger (I can dream I'll be that close to on someday...), that LEAFs you with 70 miles for the first leg. Quick Charge to 80% gives you another 60 miles. So if you limit to one Quick Charge for the day, that's 130 miles roundtrip. Longer of course is you drive slower, but I'm thinking about casula driving with the family or friends in tht car and not explaining why I'm driving 50 mph, and even so, that just raises the number to (97 -5) + 97 * 80% = 170 miles.
So even with a single Quick Charge (QC) the round trip range is 130 - 170 miles.
Suppose I want to do 200 miles and need multiple QCs in a day?
Is the total number of Quick Charges the issue, or are multiple Quick Charges in the same day more damaging than the same number of QCs but spread out 1 per day?
I.e.
Degradation from 3 QC in one day = Degradation from 1 QC per day for 3 days ???
What if each QC is to 60% instead of 80%?
If you can QC twice in the same day to 60% with little or no battery degradation, then that gives you 120% charge from QC plus your starting charge giving a round trip 65 mph range of
75 starting charge + 45 QC1 + 45 QC2 - (2 * 5 miles to get to each QC) = 155 miles @ 65 mph
If QC to 60% (or 50%, 40%...) causes little or no battery degradation, then I can leave the Prius at home, take the LEAF, do a 60% QC on the way to the destination and then a 60% QC on the way back and not harm the LEAF battery. If that works, I'd take the LEAF!!! Otherwise, I'll use QC on rare occasion and take fewer of the longer trips in the LEAF.
QC is good for emergencies or the rare long trip. If we can find a way to do multiple QC in one day, without harming the battery, then it becomes a major increase in the utility of the LEAF and the Prius will be getting very lonely!!
Be interesting to find:
Relationship between QC end charge level (%) vs. amount of battery degradation.
Relationship between number of QC / day vs. amount of battery degradation.
The biggest problem is the slight degradation to battery life from Quick Charging.
At 65 mph, you get about 75 miles from a full charge. Allow 5 miles of range to get to your nearest Quick Charger (I can dream I'll be that close to on someday...), that LEAFs you with 70 miles for the first leg. Quick Charge to 80% gives you another 60 miles. So if you limit to one Quick Charge for the day, that's 130 miles roundtrip. Longer of course is you drive slower, but I'm thinking about casula driving with the family or friends in tht car and not explaining why I'm driving 50 mph, and even so, that just raises the number to (97 -5) + 97 * 80% = 170 miles.
So even with a single Quick Charge (QC) the round trip range is 130 - 170 miles.
Suppose I want to do 200 miles and need multiple QCs in a day?
Is the total number of Quick Charges the issue, or are multiple Quick Charges in the same day more damaging than the same number of QCs but spread out 1 per day?
I.e.
Degradation from 3 QC in one day = Degradation from 1 QC per day for 3 days ???
What if each QC is to 60% instead of 80%?
If you can QC twice in the same day to 60% with little or no battery degradation, then that gives you 120% charge from QC plus your starting charge giving a round trip 65 mph range of
75 starting charge + 45 QC1 + 45 QC2 - (2 * 5 miles to get to each QC) = 155 miles @ 65 mph
If QC to 60% (or 50%, 40%...) causes little or no battery degradation, then I can leave the Prius at home, take the LEAF, do a 60% QC on the way to the destination and then a 60% QC on the way back and not harm the LEAF battery. If that works, I'd take the LEAF!!! Otherwise, I'll use QC on rare occasion and take fewer of the longer trips in the LEAF.
QC is good for emergencies or the rare long trip. If we can find a way to do multiple QC in one day, without harming the battery, then it becomes a major increase in the utility of the LEAF and the Prius will be getting very lonely!!
Be interesting to find:
Relationship between QC end charge level (%) vs. amount of battery degradation.
Relationship between number of QC / day vs. amount of battery degradation.