- Battery Pack Technical Specifications

- Battery Pack Design Descriptions

- Battery Pack Connection Diagram

- Battery Pack Architecture

E U S O - B A L L O O N D E S I G N R E V I E W, 1 8 . 1 2 . 2 0 1 2 , C N E S T O U L O U S E

Héctor PrietoRIKEN/UAH

EUSO Balloon PWP

Battery Pack Technical Specifications

CDR – 18.12.2012

PWP Technical Specifications 2

Phone Booth 24h Phone Booth 12hAltitude 40km 40kmPressure 3mBar 3mBar

Power 225W/192.72Ah, 28V 225W/96.42Ah, 28V

Operation Duty

24h 12h

Operating Temperature

Range within -40˚C/+70˚C Range within -40˚C/+70˚C

Size (500.4x300.24x170)mm (225W) (500.4x150.12x170)mm (225W)

Mass 27.14kg 14kg

CDR – 18.12.2012

Design Description 3

Battery Pack Design Description

Description

At the moment we assume a battery system providing 28V; since the highest voltage is 28V (and HV is produced internally).

The battery pack will be attached to the gondola and provide power to the LV board and the HK board. Relays (commanded by CNES) will control the power ON/OFF.

CDR – 18.12.2012

PWP Connection Diagram 4

Battery Pack Design Description/ Connection diagram

next two slides : example

CDR – 18.12.2012

PWP Architecture for 12 hours 5

Battery Pack Design Architecture 12 Hours

ComponentBattery Component Selected: Saft G62/1.2 Specification: Li-SO2/28V/34.5Ah Capacity = (Watts required/Volts required)*(Time Hours)Battery SelectionCapacity @ 24hours = (225W/28)*(24h)=96.42Ah•3 of 10 Cell Series Saft G62/1.2 = 103.5Ah

CDR – 18.12.2012

PWP Architecture for 24 hours 6

Battery Pack Architecture For 24 Hours

ComponentBattery Component Selected: Saft G62/1.2 Specification: Li-SO2/28V/34.5Ah Capacity = (Watts required/Volts required)*(Time Hours)Battery SelectionCapacity @ 24hours = (225W/28)*(24h)=192.72Ah•6of 10 Cell Series Saft G62/1.2 = 207Ah

- Objectives for EUSO BALLOON PWP

- Location

- Elements

- Current Status and future Plans

E U S O - B A L L O O N D E S I G N R E V I E W, 1 8 . 1 2 . 2 0 1 2 , C N E S T O U L O U S E

Héctor PrietoRIKEN/UAH

Instrument and Objectives

Objectives for EUSO BALLOON PWP

CDR – 18.12.2012

Instrument and Objectives 8

• Maintain constant power of 225 W for the phone booth during the time required for the mission, in this case of 12 or 24 hours of flight.

Zero levels of overloading the circuit due to problems with the battery

Zero levels of overheating in the circuit due to problems with the battery

EUSO BALLOON PWP Location

CDR – 18.12.2012

EUSO Balloon PWP Location 9

EUSO BALLOON PWP Elements

CDR – 18.12.2012

EUSO Balloon PWP Elements 10

•Cells

Option I: In case of 225W /12hrs power consumption it will be necessary 30 cells of Saft G62/1.2Option II: In case of 225W /24hrs power consumption it will be necessary 60 cells of Saft G62/1.2

•Connectors

•The Connectors we are going to use are 9 pins D-Sub connectors for all interfaces and subsystems.

•Cables

The Cable most suitable for this project is THERMAX MIL-DTL-22759/91,92 for all interfaces and subsystems.

EUSO BALLOON PWP Elements

CDR – 18.12.2012

EUSO Balloon PWP Elements 11

•Switches

•The Switches we are planning to use are APEM-M3500

•Fuses

•The Fuses we are going to use are Thermal Fuse Klixon C Series and MIL-PRF-23419 Space Coast IC

Current Status and Future Plan

CDR – 18.12.2012

Current Status and Future Plan 12

• Current Status: Electrical Design Frozen, Elements selection started

• Future Plan: Elements selection frozen, Electrical tests and first model.