Secondary battery and manufacturing system and method therefor
First Claim
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1. A secondary battery comprising:
- a first cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween;
a second cell aligned in the same direction as, and adjacent to, the first cell, the second cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween;
wherein an edge portion of the first electrode in the first cell has a different polarity than an edge portion of the second electrode in the second cell, and is overlapped and joined with the edge portion of the second electrode in the second cell.
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Abstract
A secondary battery includes cells that include a shaft, a battery case, a positive electrode sheet, a negative electrode sheet, a separator sheet, and electrolytic solution. An edge portion of the positive electrode sheet in the cell is overlapped and joined with an edge portion of the negative electrode sheet in the adjacent cell.
17 Citations
24 Claims
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1. A secondary battery comprising:
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a first cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween;
a second cell aligned in the same direction as, and adjacent to, the first cell, the second cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween;
wherein an edge portion of the first electrode in the first cell has a different polarity than an edge portion of the second electrode in the second cell, and is overlapped and joined with the edge portion of the second electrode in the second cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A manufacturing system for manufacturing a secondary battery, comprising:
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a forming apparatus that forms a first cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween; and
a moving apparatus that moves the first cell with respect to the forming apparatus so that the forming apparatus can form a second cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween, such that an edge portion of the second electrode in the second cell, which has a different polarity than an edge portion of the first electrode in the first cell, is overlapped with the edge portion of the first electrode in the first cell, and the secondary battery has a shape in which the first cell and the second cell are aligned in one direction. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A manufacturing method of a secondary battery, comprising:
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a first forming step for forming a first cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween; and
a second forming step for forming a second cell comprising a flat sheet-shaped first electrode of one polarity and a flat sheet-shaped second electrode of another polarity layered on top of one another with a separator disposed therebetween, such that an edge portion of the second electrode in the second cell, which has a different polarity than an edge portion of the first electrode in the first cell, is overlapped with the edge portion of the first electrode in the first cell, and the secondary battery has a shape in which the first cell and the second cell are aligned in one direction. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A secondary battery, comprising:
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a first cell formed by layering a flat sheet-shaped positive electrode and a flat sheet-shaped negative electrode on top of one another with a separator disposed therebetween; and
a second cell which is aligned in the same direction as, and adjacent to, the first cell and is formed by layering a flat sheet-shaped positive electrode and a flat sheet-shaped negative electrode on top of one another with a separator disposed therebetween;
whereinan edge portion of the positive electrode in the first cell is overlapped and joined with an edge portion of the negative electrode in the second cell.
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24. A secondary battery, comprising:
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a first cell formed by layering a flat sheet-shaped positive electrode and a flat sheet-shaped negative electrode on top of one another with a separator disposed therebetween; and
a second cell which is aligned in the same direction as, and adjacent to, the first cell and is formed by layering a flat sheet-shaped positive electrode and a flat sheet-shaped negative electrode on top of one another with a separator disposed therebetween;
whereinan edge portion of the first cell is overlapped and joined with an edge portion of the second cell; and
the edge portion of the first cell is different from the polarity of the edge portion of the second cell.
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Specification