System, method, and apparatus for battery cell-stack compression
AssigneeAurora Flight Sciences Corporation
InventorsAlex Andryukov, Jason Wallace
Life of this patent
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Abstract
The present disclosure relates to the manufacture of battery packs/assemblies and more specifically, the manufacture of battery packs/assemblies for use in aircraft. A lightweight battery assembly with cell compression and/or pressure management system is disclosed herein. The battery assembly can employ a composite battery enclosure impregnated with a plurality of primary fibers that define a direction of the composite battery enclosure's tensile strength. A cell-stack can be positioned in the composite battery enclosure such that the composite battery enclosure applies a predetermined pressure upon the cell-stack to compress the cell-stack in the direction of the composite battery enclosure's tensile strength.
Claims20
A battery pack comprising:
- a composite battery enclosure impregnated with a plurality of primary fibers that define a direction of the composite battery enclosure's tensile strength;
- and
- a plurality of battery cells stacked to define a cell-stack,
- wherein the cell-stack is positioned in the composite battery enclosure such that the composite battery enclosure applies a predetermined pressure upon the cell-stack to compress the cell-stack in the direction of the composite battery enclosure's tensile strength.
A battery pack assembled by a method comprising:
- compressing a cell-stack having a plurality of lithium battery cells to a predetermined pressure;
- and
- inserting, into a composite battery enclosure, the cell-stack while maintaining the predetermined pressure, wherein the composite battery enclosure is a composite structure comprising primary fibers that are oriented parallel with a load path imparted on the cell-stack.
A battery pack assembled by a method comprising:
- compressing a cell-stack having a plurality of lithium battery cells and two end-plates to a predetermined pressure, wherein the plurality of battery cells are positioned between the two end-plates;
- and
- securing a strapping material around the cell-stack, wherein the strapping material forces the two end-plates together to maintain the predetermined pressure on the cell-stack.
Dependencies are inferred from the claim text.