Agenda
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Introduction
Background
Objectives
Design Specifications
Risk Analysis
Budget
Questions
Introduction
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KELD, LLC Roger Koenig
Importance of Project:
Gas Prices
 Energy Prices
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Transportation needs
Automobiles
 Buses
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Alternative Energy
Background
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Supercapacitor
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Lithium-Ion Battery
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Hybrid Electric Vehicle (HEV)
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Research
Objective
 Develop
an energy storage system that is
suitable for Hybrid Electric Vehicles (HEV) and
renewable energy storage systems
 Use active circuit components and a
microcontroller to maximize the efficiency of
the hybrid battery-super capacitor combination
Size
Cost
Weight
Design Specifications
Project
scope
Supercapacitors
Load
• For safety reasons this design will be a smaller scale test model of
systems used in HEV and renewable storage systems.
• A 1KW pulsating load will be used to simulate energy demand
• With high power density, super capacitors are the perfect complement to
rechargeable batteries. Super capacitors are used as a buffer between the battery
and a load.
• Our load will receive pulse power from the super-capacitors
• Pulsating load with 48 volts + 20%, one kilowatt peak power for 18 seconds over
every 2 minutes( almost zero kilowatts for the remaining 102 seconds of every 2
minute period).
• A microcontroller will be used to send feedback to the battery- super capacitor
system from that load. That feedback will be energy demand at every instance in
time.
Design Specifications
 48.1V
Lithium Ion battery
 High energy density
 No memory effect and they have a slow loss of
charge when not in use
 Provide energy to the constant load
 Active circuit components and a Protection
Circuit Module (PCM)
Risk Analysis
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Battery Destruction by large discharge of
current
Cell Leakage (possible hazardous chemical
reaction)
High power (1KW hybrid) Load might blow out
the energy storage system easily
It is very dangerous to work with High Current
system
Budget
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$10,000 budget which is provided by KELD,
LLC
DC-DC Converters ($50-$70)
PCM ($80-$100)
13 cells (48.1V)Lithium ion ($800 -$1000)
Super capacitors( to be determined)
Load Resistors (1KW power rating $1000)
Microcontroller ($15)
Questions?