Uninterruptible Power Source UPS Status

1
Uninterruptible Power Source (UPS) Status

• P. Nemeth/LM

2
Responsibilities

• Cells, Bricks, and BMS
• Yardney/Lithion R. Gitzendanner
• Battery Casing, Electrical/Mechanical Integration
• CSIST Jong-Ren Lee
• Battery Charger
• CRISA A. Posada
• Customer/Subcontract Management
• MIT F. Eppling and S. Ting
• Technical Management M. Capell/MIT and G.
  Viertel/ETH
• Subcontract Technical Monitor P. Nemeth/LM

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CSP Functional Block Diagram
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Battery Specifications

• Consists of eight cells, Yardney INCP95/28/151
• Nominal Voltage 8 X 3.6 V 28.8 V
• Capacity 28 Ah
• Operational Temperature Range -30 degC to 50
  degC
• Capable of supplying 45A pulse at required
  voltage throughout mission profile
• Battery will provide control power to payload in
  event of loss of ISS power or communication
• Watch-dog timer/control circuit
• Normal Ramp down function
• Quench monitoring
• Initiation of quench, 45A pulse

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Yardney/Lithion Cells
6
Bricks
7
Battery Management System
8
UPS Mounting Location
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Progress

• UPS Statement of Work baselined 5 March, 2003
• Sole-Source Justification completed May 2003
• Contract Awarded 23 June, 2003 to Yardney/Lithion
  for Cells, Bricks, and Battery Management System
  (BMS)

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Preliminary Milestone Schedule (Cells/Bricks/BMS)

• Preliminary Design Review (PDR) - 25 August, 2003
  at Yardney/Lithion
• Critical Design Review (CDR) October 2003
• PDR for Battery Casing and Electronic/ Mechanical
  Integration at CSIST to follow
• Cell Qual Testing March to May 2004
• Flight Cell Screening May to June 2004
• BMS Qual/Screening May to June 2004
• Delivery July 2004