Thermally efficient battery cell assembly
AssigneeTextron Innovations Inc.
InventorPhalgun Madhusudan
Life of this patent
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Abstract
A battery cell assembly, including a rolled cell formed from a first electrode and a second electrode rolled together about a longitudinal axis. The rolled cell includes a primary section in which the first electrode and the second electrode overlap in a radial direction from the longitudinal axis, and a first extension end extending from a first longitudinal end of the primary section and formed from a first edge section of the first electrode. The first edge section includes a first folded portion folded to contact an adjacent portion of the first edge section. The battery cell assembly further includes a first end cap coupled to the rolled cell and contacting the first folded portion.
Claims13
A method of assembling a battery cell assembly, comprising:
- layering a first electrode with a second electrode in a first direction such that a primary section of the first and second electrodes overlap in the first direction and a first edge section of the first electrode does not overlap with the second electrode in the first direction;
- winding the first and second electrodes about an axis perpendicular to the first direction to form a cylindrically-shaped rolled cell with the first edge section disposed on a first end of the rolled cell;
- folding a first folded portion of the first edge section to contact an adjacent portion of the first edge section;
- and
- coupling a first end cap to the rolled cell to contact the first folded portion.
A method of constructing a battery cell assembly, comprising:
- rolling a first electrode and a second electrode together about a longitudinal axis to form a rolled cell wherein the first electrode and the second electrode overlap in a radial direction from the longitudinal axis and wherein a first extension end extends from a first longitudinal end of the primary section and is formed from a first edge section of the first electrode, and wherein the first edge section comprises a first folded portion folded to contact an adjacent portion of the first edge section;
- providing a first end cap coupled to the rolled cell, the first end cap contacting the first folded portion;
- providing a second end cap;
- disposing a jacket between the first end cap and the second end cap;
- wherein the first end cap, the second end cap, and the jacket are sealed to form an interior space;
- and
- preventing fluid from entering the interior space and preventing fluid from exiting the interior space.
A method of constructing a battery cell assembly, comprising:
- rolling a first electrode and a second electrode together about a longitudinal axis to form a rolled cell, the rolled cell having a primary section in which the first electrode and the second electrode overlap in a radial direction from the longitudinal axis, and a first extension end extending from a first longitudinal end of the primary section and formed from a first edge section of the first electrode, wherein the first edge section comprises a first folded portion folded to contact an adjacent portion of the first edge section;
- coupling a first end cap to the rolled cell and contacting the first folded portion;
- coupling a second end cap coupled to the rolled cell and contacting the second electrode;
- and
- disposing a tubular jacket between the first end cap and the second end cap, the jacket comprising an opening for receiving the first end cap or the second end cap.
Dependencies are inferred from the claim text.