Packaged thin film batteries and methods of packaging thin film batteries
First Claim
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1. A method of sealing a battery cell having a top surface, a bottom surface and peripheral edges, the method comprising the steps of:
- (a) positioning a first layers of packaging foil over the top surface of the battery cell;
(b) positioning a second layer of packaging foil over the bottom surface of the battery cell; and
(c) heat sealing the first layer of packaging foil to the top surface of the battery cell, heat sealing the second layer of packaging foil to the bottom surface of the battery cell, and heat sealing the first layer of packaging foil to the second layer of packaging foil about the periphery of the battery cell.
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Abstract
A packaged battery (10) and method of producing such is provided having a thin film lithium battery cell (11) sealably encased within a packaging layer (12). The battery cell (11) includes a substrate (13), an anode (16), an electrolyte (15), a cathode (14), a passivation layer (19), an anode current collector (17) and a cathode current collector (18). The packaged battery is produced by heat sealing a packaging foil (21, 22) to the exterior surfaces of the battery cell (11).
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Citations
16 Claims
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1. A method of sealing a battery cell having a top surface, a bottom surface and peripheral edges, the method comprising the steps of:
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(a) positioning a first layers of packaging foil over the top surface of the battery cell; (b) positioning a second layer of packaging foil over the bottom surface of the battery cell; and (c) heat sealing the first layer of packaging foil to the top surface of the battery cell, heat sealing the second layer of packaging foil to the bottom surface of the battery cell, and heat sealing the first layer of packaging foil to the second layer of packaging foil about the periphery of the battery cell. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of sealing a battery cell having a top surface, a bottom surface and peripheral edges, the method comprising the steps of:
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(a) providing a first layer of packaging foil; (b) providing a second layer of packaging foil; (c) positioning a battery cell between the first and second layers of packaging foil; (d) heating the first and second layer of packaging foil; and (e) pressing the first layer against the top surface of the battery cell and pressing the second layer against the bottom surface of the battery cell, whereby the heating and pressing of the first and second layers against the battery cell causes the first and second layers to be sealed to the battery cell. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method of sealing a battery cell having an exterior top surface, an exterior bottom surface and exterior peripheral edges, the method comprising the steps of:
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(a) providing two sheets of overlaying packaging foils; (b) positioning a battery cell between the two sheets of packaging foil; (c) heat sealing the packaging foil to the exterior surface of the battery cell. - View Dependent Claims (14, 15, 16)
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Specification