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Now that you should know how to design a battery pack, we’ll get you to run through the process of choosing a battery configuration for a car, given the following parameters (chosen to loosely represent Midnight Sun XIV):
If you think there’s info missing here, message Micah Black and I’ll first make sure I didn’t make a mistake in the info provided, and then help you out to make sure you’re on the right track!
Car Specs:
Item | Spec | Notes |
|---|---|---|
Race Distance | 3000km | |
Car Average Velocity | 60km/h | Assume average velocity for the entire duration of the race, and that the path is flat. |
Power Consumed travelling at Average Velocity | 1005W | Per Motor |
Number of Motors | 2 | Motors on each of the 2 rear wheels |
Motor Controller Min, Max Voltage | 50V, 165V | |
Single Cell Min, Max Voltage | 2.5V, 4.2V | At the full charge and full discharge limits |
Single Cell Capacity | 3450mAh | Assume all cells are perfectly balanced |
Max Discharge Current of Single Cell | 10A | |
Solar Energy Input | 800W | Assume the sun is always shining for the entire duration of the race |
What do you recommend for the number of cells in series and parallel, and why did you choose those numbers ?- we’re looking for an answer in the form of XPXS and a justification.
Step 3
Submit your answer to the Battery Lead (Micah Black ) through Slack and then we can discuss some more in detail about your answer. I’ll make sure that you understand what you will be contributing to this term!
Extra Info
How does the Solar Work?
The solar panels on the Midnight Sun Vehicles provide power directly into the High Voltage system, which powers the motors - its another power source for the car and will lighten the load on the batteries.