May 6, 2008 Application Requirements Form Battery Electronics Units Lithium Ion Battery Balancing, Monitoring, And Cell Bypass Device Drivers Rev A AEROFLEX PLAINVIEW SALES & MARKETING Prepared by AEROFLEX PLAINVIEW 35 South Service Road Plainview, NY 11803 Requirements Worksheet: Battery Electronics Units Introduction The Battery Electronics Unit Application Requirements Worksheet provides a concise format to assist in defining your battery system’s cell balancing and health monitoring needs. Completing the worksheet will serve several purposes. You will have a better understanding of the functional and electrical features of Aeroflex’s BEU capabilities, it will raise specific questions pertaining to your application that may not be covered by the questionnaire, and most importantly, it will give Aeroflex Engineering and Sales departments a good understanding of your system needs. This will ultimately result in very efficient responses to your technical questions and proposal requests. Aeroflex Plainview, Sales and Marketing Completed by: Date: Customer Information Company Name: Location: Technical Contact Name: Technical Contact Phone: Technical Contact Email: Application Program Name: Application Description: Target System: Delivery Needs Military Space Qty Lab Date Prototypes (EM): Flight product: Launch Date: Rev A 2 www.aeroflex.com Requirements Worksheet: Battery Electronics Units Balancing Characteristics Example Battery Technology Lithium-Ion Battery Configuration 8s1p Battery A-h Capacity 100 A-h Balancing Accuracy 10 mV Maximum Desired Balancing Current 1 ampere Desired balancing current for a voltage imbalance of 100mv 100 ma Transfer Ratio ( Cell to Share Bus ) 1 ohm Example BEU Operating Voltage Input Voltage Range (With Limits) Requirement Requirement 28 V ± 6 V Voltage Monitoring Example Requirement Total Battery Voltage Accuracy 0.3% of Full Scale Individual Cell Voltage Accuracy BOL Monitor Output Voltage Telemetry Interface Format 1553 Data Bus Spacewire CAN Bus RS-485 Serial Discrete Analog Voltages Other (Specify) mV EOL mV Discrete Output Thresholds Low Cell Volts High Cell Volts OVP (Overvoltage Protection) Volts Mechanical Requirements Standard Product BEU Configuration? No Yes Example Size Requirement 5” x 5” x 11” Weight Rev A BEU Series: 8 pounds 3 www.aeroflex.com Requirements Worksheet: Battery Electronics Units Radiation Performance Requirements Total Dose Example > 100 krads(Si) Single Event Latchup Single Event Upset Requirement Immune Recoverable ELDRS Neutron Fluence Prompt Dose LET 80 Mev Example Environmental Conditions Temperature Range of Battery Temperature Range of BEU -20ºC to +70ºC Orbit LEO Mission Life 8 years Vibration Level 10 Grms EMI Pyroshock Optional Features Dual Redundant Balancing Cell Bypass Relays Reconditioning Load Control Temperature Sensor Conditioning (for temperature sensors located in the battery) Requirement 0ºC to +50ºC MIL-STD-461C Yes No Yes Yes Yes Yes No No No No Other(Please Specify) Rev A 4 www.aeroflex.com Requirements Worksheet: Battery Electronics Units Additional Requirements: Rev A 5 www.aeroflex.com