EVH Tech: Batteries: Designing a Battery Pack

Updated by Bill Lofton 11/8/16


Courtesy of Karl Reque and Composites World, Brammo, Tesla
 

Designing a battery system for your aircraft entails more than determining a battery weight budget and then checking battery prices and your checkbook to see if you can buy that many. Here’s how it works:
 

Battery System Building Blocks

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Battery Pack Design Rules

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Choice of Charge Capacity of Individual Cells

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Choice of Discharge Current Capacity of Parallel Groups of Cells

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Flexibility on Number of Cells in a Parallel Cell Group

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Choice of Number of Modules in a Battery Pack

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Choice of Number of Packs in a Battery System

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Flexibility on Configuration of Cells in a Battery Pack

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Each Pack Requires a Battery Management System

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Battery Modules Must Be Encased and Secured

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Other Resources

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AND WITHOUT FURTHER ADO…
 

Battery Pack Voltage Requirements

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Battery Pack Series Cell Configuration Requirements

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Battery Pack Max Continuous Power Requirement

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Battery Pack Energy Requirement

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Battery Pack Current and Charge Requirements

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Battery Pack Specific Current Requirement

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Battery Pack Parallel Cell Configuration Requirements

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Summary of Example Battery Pack Design

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Fun, huh? If not…
 

Battery Pack Designers

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