Battery-Supercapacitor Hybrid System

Design Team TenFinal Presentation

ECE 480 FS08

Overview

Objective

To design and develop a battery-

supercapacitor hybrid system

Team 10 KELD, LLC

Specifications 1kW Pulse Load for 18sec every

2minutes Lithium Ion battery Supercapacitor

Team 10 KELD, LLC

Design Objectives Design a battery to provide the average power to the

load for at least 20 minutes. Design a supercapacitor to provide the pulse power to

the load. Design and build a hybrid structure (or circuit

configuration) of the battery and supercapacitor to provide needed power to the load.

Design and build a programmable load to simulate the pulsating load.

Test and demonstrate the hybrid energy storage system to prove that the constant power is from the battery and the pulse power of the load is from the supercapacitor.

Provide final report and suggestions to improve/optimize the system

KELD, LLC

Design Objectives Completed

Constructed 14 Cell Battery Pack• Lithium Polymer• 3.7 Volts per Cell• Program Control Module

Obtained a 165F Supercapacitor • Max Voltage: 48V

Obtained 4 Millennium3 relays

Obtained 2 Heat Sinks

Team 10 KELD, LLC

Design Objectives Completed

Constructed Battery-SuperCapacitor Hybrid System

Tested the system

Team 10 KELD, LLC

Design Improvements Design more robust battery pack Attach a movable load Better container Better relays Circuit Protection

Team 10 KELD, LLC

Future Applications Add Sensors Voltage/Current Display Automobiles Cell phones Computers

Team 10 KELD, LLC

Thank you for your time

Any Questions???

Team 10 KELD, LLC

Evolution of the Battery/Supercapacitor Hybrid System

System 2

System 1 System 3 System 4

- 51.8 Volts- 5 x 165F

Modules- 905 Farads Total

- 51.8 Volts- 56 Li-Po Cells- 4 PCMs

- 51.8 Volts- 28 Li-Po Cells- 2 PCMs- 2 x 165 F Modules- 330 Farads Total

- 51.8 Volts- 14 Li-Po Cells- 1 PCM- 85 Farads Total- 3 Solid-State Relays- 1 Digital Relay Controller

Team 10 KELD, LLC

Comparing Systems SystemSystem 2System 1 System 3 System 4

Limitations:- Excessive Weight- High Cost- Low Energy Estimated Cost:

$9000

Limitations:- Excessive Weight- Low Power- Limited Cycle LifeEstimated Cost:

$5900

Limitations:- Relatively High Cost- Performance Limited by Voltage Dependency Estimated Cost:

$7400Team 10 KELD, LLC

Team 10 KELD, LLC