Battery pouch sheet edge insulation
AssigneeApple Inc.
InventorLoren L. Roy
Life of this patent
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Abstract
A multi layer laminate sheet suitable to form a battery pouch is described. The laminate sheet includes a core metal layer, a sealant layer, and an insulating layer. The sealant layer is bonded to one surface of the core metal layer, and the insulating layer is bonded to the other surface of the core metal layer. The insulating layer has a width that is greater than the width of the core metal layer, such that the insulating layer extends past two edges of the core metal layer. When the pouch is formed by folding the laminate sheet, the insulating layer protects the edges of the core metal layer of the laminate sheet from being exposed around the edges or sides of the pouch. Other embodiments are also described and claimed.
Claims20
A multi-layer sheet suitable to form a battery pouch, comprising:
- a core metal layer having a first surface and a second surface that is opposite the first surface;
- a sealant layer attached to the first surface of the core metal layer, wherein the multi-layer sheet has a fold therein and the sealant layer is continuous across the fold;
- and
- an insulating layer attached to the second surface of the core metal layer and having a width that is greater than a width of the core metal layer such that the insulating layer extends past a left edge and a right edge of the core metal layer.
A battery, comprising:
- an electrode assembly;
- and
- a pouch formed by first and second laminated sheet sections each of which includes a sealant layer that forms an interior lining of the pouch and an inner metal layer interposed between the sealant layer and an outer insulating layer, wherein the sealant layer in the first laminated sheet section is heat sealed in direct contact with the sealant layer in the second laminated sheet section to seal the pouch, wherein the outer insulating layer of each of the first and second laminated sheet sections forms an exterior lining of the pouch and extends beyond a left edge and a right edge of the inner metal layer to protect the left and right edges of the inner metal layer.
A battery pouch comprising:
- a multi-layer sheet having a metal layer interposed between a sealant layer and an insulating layer, the sealant layer being bonded to seal the pouch, wherein the insulating layer has a width that is greater than a width of the metal layer so that a peripheral portion of the insulating layer extends beyond an edge of the metal layer and has been folded inward to protect the edge of the metal layer from being exposed outside of the pouch when the pouch has been sealed, wherein the multi-layer sheet has a fold therein and the sealant layer is continuous across the fold.
Dependencies are inferred from the claim text.