Variable volume containment for energy storage devices
First Claim
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1. An energy storage device (ESD) comprising:
- at least two bi-polar electrode units provided in a stacking direction, wherein each electrode unit comprises;
a conductive substrate;
a positive active material electrode layer on a first surface of the conductive substrate; and
a negative active material electrode layer on a second surface of the conductive substrate;
an electrolyte layer provided between the electrode units;
a flexible gasket positioned about the electrolyte layer wherein the gasket is mechanically deformable in a predetermined direction along at least the stacking direction and along an axis normal to the stacking direction; and
a rigid component positioned about the flexible gasket, wherein the rigid component and the flexible gasket are separated by a gap, and wherein the flexible gasket is configured to mechanically deform into the gap.
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Abstract
A stacked energy storage device (ESD) has at least two cell segments arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. Variable volume containment may be used to control the inter-electrode spacing within each cell segment. In some embodiments, one or more dynamic flexible gaskets may be included in each cell segment to seal the electrolyte within the cell segment and to deform in preferred directions. In some embodiments, hard stops may set the inter-electrode spacing of the ESD.
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Citations
19 Claims
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1. An energy storage device (ESD) comprising:
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at least two bi-polar electrode units provided in a stacking direction, wherein each electrode unit comprises; a conductive substrate; a positive active material electrode layer on a first surface of the conductive substrate; and a negative active material electrode layer on a second surface of the conductive substrate; an electrolyte layer provided between the electrode units; a flexible gasket positioned about the electrolyte layer wherein the gasket is mechanically deformable in a predetermined direction along at least the stacking direction and along an axis normal to the stacking direction; and a rigid component positioned about the flexible gasket, wherein the rigid component and the flexible gasket are separated by a gap, and wherein the flexible gasket is configured to mechanically deform into the gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification