Flexible battery structure
First Claim
1. A flexible battery structure comprising:
- a first flexible substrate having an inner surface face and an outer surface face defining a cathode;
a layer of cathode active material adjacent to said inner surface face of said cathode substrate;
a layer of electrolyte adjacent to said layer of cathode active material;
a layer of anode active material adjacent to said electrolyte layer;
a second flexible substrate having an inner surface face and an outer surface face defining an anode, said anode inner surface being adjacent to said anode active material layer;
said first and second flexible substrates having surfaces to provide a positive polarity and negative polarity connection, respectively;
said layers of cathode active material, electrolyte and anode active material defining a stack;
first means for sealing said stack of layers formed between said first and second flexible substrates; and
second means for hermetically sealing said first and second flexible substrates to prevent moisture from contacting said stack of layers.
3 Assignments
0 Petitions
Accused Products
Abstract
A flexible battery structure comprises a stack of a layer of cathode active material and anode active material separated by a layer of electrolyte and held between a cathode flexible substrate and an anode flexible substrate, wherein the cathode and anode substrates have a surface area larger than the surface area of the stacked layers to form and define overlapping end portions which are hermetically sealed with a water-resistant composite material. The outer surface of the cathode and outer surface of the anode form the positive polarity and negative polarity connection leads of the battery structure. The anode and cathode substrates are flexible to accommodate applications in which the battery is subjected to bending.
19 Citations
21 Claims
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1. A flexible battery structure comprising:
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a first flexible substrate having an inner surface face and an outer surface face defining a cathode;
a layer of cathode active material adjacent to said inner surface face of said cathode substrate;
a layer of electrolyte adjacent to said layer of cathode active material;
a layer of anode active material adjacent to said electrolyte layer;
a second flexible substrate having an inner surface face and an outer surface face defining an anode, said anode inner surface being adjacent to said anode active material layer;
said first and second flexible substrates having surfaces to provide a positive polarity and negative polarity connection, respectively;
said layers of cathode active material, electrolyte and anode active material defining a stack;
first means for sealing said stack of layers formed between said first and second flexible substrates; and
second means for hermetically sealing said first and second flexible substrates to prevent moisture from contacting said stack of layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A flexible battery structure comprising:
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a first flexible substrate defining a cathode;
a second flexible substrate having peripheral surface dimensions substantially equal to said first flexible substrate and defining an anode;
a layer of cathode active material;
a layer of electrolyte material;
a layer of anode active material;
said layers of cathode active material, electrolyte material and anode active material defining a stack sandwiched between said first and second flexible substrates and having peripheral dimensions smaller than said first and second flexible substrates;
said first and second flexible substrates having surfaces to provide a positive polarity and negative polarity connection, respectively;
a marginal peripheral seam defined by overlapping the area created by the difference in the peripheral dimensions of said first and second flexible substrates and the peripheral dimension of said stack of layers; and
means for hermetically sealing said marginal peripheral seam. - View Dependent Claims (15, 16, 17)
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18. A flexible battery structure comprising:
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a thin, flexible copper substrate defining a cathode;
a thin, flexible aluminum substrate defining an anode and having peripheral surface dimensions and shape substantially equal to said copper substrate;
said flexible copper substrate and said flexible aluminum substrate respectively, defining a polarity connection lead;
a layer of cathode active material adjacent to said cathode;
a layer of anode active material adjacent to said anode;
a layer of electrolyte material separating said layers of cathode and anode active materials;
a stack of layers defined by said cathode active material, anode active material and electrolyte material layers, said stack of layers having a peripheral surface dimension and shape smaller than said copper and aluminum substrates and sandwiched therebetween, whereby a marginal peripheral seam is formed between the copper and aluminum substrate in the area defined by the difference between the peripheral surface dimensions of the copper and aluminum substrates and said stack of layers; and
a water-resistant material inserted in said marginal peripheral seam to hermetically seal said battery structure. - View Dependent Claims (19, 20, 21)
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Specification