Overview

CAES Battery Electronics provide autonomous, dissipative, and continuous cell balancing to maximize available battery capacity, and therefore battery cycle life, throughout a mission.

With their outstanding energy density, Lithium-Ion batteries are the preferred technology for many applications. It is extremely important to maintain the cell voltage between its design limits, or the cell will be irreparably damaged. This is where CAES BEUs can help. We provide continuous balancing, monitoring, and telemetry for 8-, 12- or 24-cell batteries. CAES also offers interface assembly solutions for your designs.

BEUs

Battery Electronic Units (BEUs)

With CAES BEUs, individual cell voltage is monitored to keep track of cells that may exceed charge limits. Precise voltage telemetry is provided for all cells as well as total battery voltage. CAES also provides units that deliver independent balancing for two batteries or redundant balancing for one. Optional features include reconditioning load control and cell bypass device drivers.

  • Cell voltage monitoring and telemetry
  • Cell balancing to within +/-5.0mV
  • Cell voltage monitoring accuracy +/-10mV
  • Total battery voltage monitoring accuracy +/-0.3% of full scale
  • MIL-STD-1553B telemetry for data logging and monitoring
  • Discrete output lines for critical signaling with user definable thresholds (typical):
    • Over-voltage protection - 4.40V
    • Cell voltage high - 4.20V
    • Cell voltage low - 3.20V
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Battery Electronic Unit

Battery Electronic Units

Part Number Cells Size
BEU8635-08 8 11.50" L x 2.30" W x 5.25" H
BEU8635-12 12 11.50" L x 2.30" W x 5.25" H
BEU8635-24 24 11.50" L x 2.30" W x 5.25" H
BEU8636-08 8 11.50" L x 3.30" W x 5.25" H
BEU8636-12 12 11.50" L x 3.30" W x 5.25" H
BEU8636-24 24 11.50" L x 3.30" W x 5.25" H
BEU8637-08 8 11.50" L x 4.00" W x 5.25" H
BEU8637-12 12 11.50" L x 4.00" W x 5.25" H
BEU8638-08 8 11.50" L x 5.20" W x 5.25" H
BEU8638-12 12 11.50" L x 5.20" W x 5.25" H
BEU8640-24 24 11.50" L x 5.30" W x 5.25" H
BEU8642-EVAL 8 12.00" L x 9.00" W x 2.65" H
BEU8642-EVAL1 8 12.00" L x 9.00" W x 2.65" H
Interface Assembly

Battery Interface Assembly

Part Number Cells Size
BIE8678 8 – 32 6.95" W x 11.71" L x 4.50" H
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