An inner-city metro-bus weighs approximately 10,000 kg including passenger loads, travels 500 km per fully charged battery, and consumes 420 Wh/km. Design a lithium-ion battery pack for the metro-bus using newly developed cells made of silicon anode and lithium manganese-iron phosphate (LMFP) with formulation of Si // 4(LiMn5Fe0.5PO4). The cell average voltage is 3.5V and its capacity 4Ah. The nominal battery pack voltage is 350V. Report the battery pack configuration: Calculate the amount of silicon and LMFP cathode that is required for a single cell at 4Ah capacity. Atomic weight of elements in gram: Si=28 , Li=7, Mn=55, Fe=56, P=31, and O=16. If the building block cell is designed in a cylindrical format (2cm diameter and 10 cm height), calculate the energy density (Wh/lit) and specific energy (Wh/kg) at the cell level and at the battery pack level. Assume cell weight 100g, and cells are arranged in two layers in the battery pack with top aspect ratio of 2x1, (x = 2y). Calculate the voltage drop of the battery pack at peak-power of 100 kW, if internal resistance of each cell in the battery pack is 0.05 Ohm. The metro-bus has frequent stops at each station. Design a supercapacitor bank that can capture the regenerative breaking energy of the metro-bus. Report the supercapacitor bank configuration. Use building block capacitors with 7200F and 3 V. The output voltage of the bank of supercapacitor is 120V. The metro-bus is traveling at 70.128km/h speed and is coming to a complete stop at each station.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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An inner-city metro-bus weighs approximately 10,000 kg including passenger loads, travels 500 km per fully charged battery, and consumes 420 Wh/km.
Design a lithium-ion battery pack for the metro-bus using newly developed cells made of silicon anode and lithium manganese-iron phosphate (LMFP) with formulation of Si // 4(LiMn₅Fe_0.5PO₄). The cell average voltage is 3.5V and its capacity 4Ah. The nominal battery pack voltage is 350V. Report the battery pack configuration:
Calculate the amount of silicon and LMFP cathode that is required for a single cell at 4Ah capacity. Atomic weight of elements in gram: Si=28 , Li=7, Mn=55, Fe=56, P=31, and O=16.

If the building block cell is designed in a cylindrical format (2cm diameter and 10 cm height), calculate the energy density (Wh/lit) and specific energy (Wh/kg) at the cell level and at the battery pack level. Assume cell weight 100g, and cells are arranged in two layers in the battery pack with top aspect ratio of 2x1, (x = 2y).

Calculate the voltage drop of the battery pack at peak-power of 100 kW, if internal resistance of each cell in the battery pack is 0.05 Ohm.

The metro-bus has frequent stops at each station. Design a supercapacitor bank that can capture the regenerative breaking energy of the metro-bus. Report the supercapacitor bank configuration. Use building block capacitors with 7200F and 3 V. The output voltage of the bank of supercapacitor is 120V. The metro-bus is traveling at 70.128km/h speed and is coming to a complete stop at each station.

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