Transcript Phone Booth/24hrs - Euso

EUSO BALLOON
Battery Power Pack
(PWP)
RIKEN/UAH
Héctor Prieto, Katsuhiko Tsuno, Marco Casolino
1
Mission Objectives with success criteria
Maintain constant power of 225 W for the phone booth and during the time
required for the mission, in this case 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
2
Battery Pack technical specifications
Altitude
Pressure
Power
Operation
Duty
Operating
Temperature
Size
Mass
Phone Booth 24h
40km
3mBar
Phone Booth 12h
40km
3mBar
225W/192.72Ah, 28V
25W/96.42Ah, 28V
24h
12h
Range within -40˚C/+70˚C
Range within -40˚C/+70˚C
(500.4x300.24x170)mm
(225W)
(500.4x170.12x170)mm
(225W)
27.14kg
14.4kg
3
Battery Pack design description
Objectives





PWP shall provide the primary power in 30 hours minimum which
includes 24 hours level flight and rising operation.
PWP shall provide the primary power in 10 hours minimum including 2
hour level flight and rising operation.
PWP shall provide the average power of 225W to the Phone Booth
PWP shall provide enough transient current generated at instrument
booting.
PWP shall be protected from the instrument overload by the fuse, circuit
breaker or current limiter.
4
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.
5
Battery Pack connection diagram
Phone Booth/12 and 24hrs
6
Battery Pack Phone Booth/12hrs
Component
Battery Component Selected: Saft G62/1.2
Specification: Li-SO2/28V/34.5Ah
Capacity = (Watts required/Volts required)*(Time Hours)
Battery Selection
Capacity @ 24hours = (225W/28)*(24h)=96.42Ah
•3 of 10 Cell Series Saft G62/1.2 = 103.5Ah
7
Battery Pack Mechanical Architecture
Phone Booth/12hrs
8
Battery Pack Phone Booth/24hrs
Component
Battery Component Selected: Saft G62/1.2
Specification: Li-SO2/28V/34.5Ah
Capacity = (Watts required/Volts required)*(Time Hours)
Battery Selection
Capacity @ 24hours = (225W/28)*(24h)=192.72Ah
•6of 10 Cell Series Saft G62/1.2 = 207Ah
9
Battery Pack Mechanical Architecture
Phone Booth/24hrs
10
Battery Pack Mechanical Architecture
Phone Booth/24hrs
11
Battery Pack Weldering
Saft G62/1.2 nickel strips weldering conditions
12
Saft batteries typical discharge
characteristics
Saft G62/1.2 typical discharge characteristics
13
Mass Estimation
14
Phone Booth/12hrs
500.4 mm
170 mm
150.12 mm
Upperside and Under side
Battery Box
Lateral
500.4 mm
Mass Calculations
150.12mm
Density = Aluminum Box = 2.69g/cm3 = 0.00269g/mm3
Lateral Sides Volume = LSV= 500.4mm*170mm*3mm*2*0.00269g/mm3 = 1373g
Front Face
and Back
Face
170 mm
Thickness = 3mm
Upper and Under Side Volume = USV = 500.4mm*150.12mm*3mm*2*0.00269g/mm3 = 1212.43g
Front and Back Face Volume = FBV= 170mm*150.12mm*3mm*2*0.00269g/mm3 = 412g
Total Case Mass = LSV + USV + FBV = 1373 + 1212.43+412 = 3kg
TOTAL MASS INCLUDING CELLS AND CASE = (30Cells*300g) + (Case Mass = 3kg) = 12kg+20% of margin = 14.4kg
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Phone Booth/24hrs
500.4 mm
170 mm
300.24 mm
Upperside and Under side
Battery Box
Lateral
500.4 mm
Mass Calculations
300.24 mm
Density = Aluminum Box = 2.69g/cm3 = 0.00269g/mm3
Lateral Sides Volume = LSV= 500.4mm*170mm*3mm*2*0.00269g/mm3 = 1373g
Front Face
and Back
Face
170 mm
Thickness = 3mm
Upper and Under Side Volume = USV = 500.4mm*300.24mm*3mm*2*0.00269g/mm3 = 2423g
Front and Back Face Volume = FBV= 170mm*300.24mm*3mm*2*0.00269g/mm3 = 824g
Total Case Mass = LSV + USV + FBV = 1373 + 2423 +824 = 4.62kg
TOTAL MASS INCLUDING CELLS AND CASE = (60Cells*300g) + (Case Mass = 4.62kg) = 22.62kg+20% of margin = 27.14kg
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Battery Protection and Support
•Fire
The Battery pack will have thermal fuse overheating protector
which will protect the PWP against fire risk
•Explosion
The box itself will be a protection against explosion due to the
batteries will be confined there
•Breaking
This mechanical issue shall be discused with the mechanical
engineers in charged of the EUSO-Balloon mechanical Structure
Mechanical Support
ECAL-Riken will provide the mechanical structure, which will be
made of aluminum to avoid risk of explosion and fire propagation.
(TBD)
17
Battery Cells, Connectors and Cables
•Cells
Option I: In case of 225W /12hrs power consumption it will be necessary 30 cells of Saft G62/1.2
Option 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 Cables we are going to use are THERMAX MIL-DTL-22759/91,92
for all interfaces and subsystems.
18
Battery Switches, Fuses
•Voltage Regulator
The Switches we are going 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
19
Why using 225W ?
225W
Interface
High Voltage Power Supply
LVPS DP/1
LVPS DP/2
LVPS DP/3
LVPS-HK
LVPS-PDM
CPU
CCB
Data Storage
GPS
CLK
Additional Spare
Heaters
Power Consumption
9.2W
7.2W
7.2W
7.2W
6W
2.4W
14.4W
5W
18W
1.2W
3.6W
15W
TBC
Total: 96.4W+20% of security Margin = 115.68W
Additional Heaters and backup = 70W
(188.7)+20% of security Margin = 222W
This version should be discussed
20
Battery Pack Budget Phone
Booth /225W 12 and 24hrs
Equipment
Battery
Option 3
Switch
Thermal Fuse
Electrical Fuse
Cable
Specification
Model
Quantity
Price/Unit
Total Pack
Li-SO2/28V/34.5Ah
Saft G62/1.2
30
75.5€
TBD
10
TBC
Thermal Fuse
Klixon C Series
10
TBD
MIL-PRF-23419
Space Coast IC
50
TBC
30m
230$
V: 28V; worse scenario 20V
W =225W
Current = 12.5A;
Steady Current=225/20=11.25A*2PWP in parallel =
22.5A
Temp = -400C /+700C
V: 28 V
W: 225W
Steady Current = 225W/20V+Security range =
11.25A+50% security range= 17A.
Temp = -400C /+700C
V: 28 V; worse scenario =20V
W: 225W
Steady Current = 225W/20V = 11.25A
Temp = -40 0 C /+70 0 C
V: 20V
W =225W
Current = 11.25A
Temp = -400C /+700C.
AWG= 14
APEM-M3500
THERMAX MILDTL22759/91,92
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THANK YOU!!!
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