DC Volts & Amps to Recharge 8.8 kWh Chevy Volt in 15 Min

  • Thread starter Thread starter jesricha
  • Start date Start date
  • Tags Tags
    Amps Dc Volts
AI Thread Summary
To recharge an 8.8 kWh Chevy Volt battery in 15 minutes, a high-voltage, low-current DC charging solution is essential to minimize power loss. The power required can be calculated using the formula P = IV, leading to the conclusion that a significant combination of volts and amps is necessary. Specifically, the calculation shows that 35.2 kW is needed, which translates to a voltage and current ratio that favors higher voltage. A Class III charger would ideally operate at a voltage that maximizes efficiency while maintaining a manageable current. This approach ensures rapid charging with minimal energy loss.
jesricha
Messages
2
Reaction score
0

Homework Statement



The fastest, most powerful Class III battery charger available is supposed to recharge 8.8 kWh into a Chevy Volt battery pack in 15 minutes. What is the most likely combination of DC volts and amps to do this and why?

Homework Equations



W=VxI (I = amps)
a 120 V unit can do 12 I in 6 hours

The Attempt at a Solution

 
Physics news on Phys.org
If I remember correctly, P = IV (not the work, but the rate of work -- power). That would mean that you would have 8.8 [kWh]/15 [min] = I*V (be sure to convert the units appropriately). For DC circuits, I would assume the most likely condition would be the one with an appropriately large V/I ratio (more voltage and less current would imply less power loss from resistance).
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »

Similar threads

Solving DC Circuits Power Question: 15 Amps, 220 Volts
Replies
2
Views
2K
Meaning & limitations of Volt/Current ratings
Replies
4
Views
2K
Enclosed floating aquatic 12v car-audio amp system
Replies
12
Views
2K
Mini Electric Horse Fence, or Micro-Taser?
Replies
41
Views
6K
Help- using NiMh batteries for high load applications (150A peak)
Replies
3
Views
3K
Take a stab at it what do you think? heat element/battery
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top