Bipolar battery and method for manufacturing the same
First Claim
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1. A bipolar battery comprising:
- a bipolar electrode provided with;
a current collector;
a positive electrode layer formed on one surface of the current collector; and
a negative electrode layer formed on the other surface of the current collector;
an electrolyte layer permitting the bipolar electrode to be sequentially laminated through the electrolyte layer so as to be connected in series to form a stack structure;
a resin portion with which the positive electrode layer, the negative electrode layer and the electrolyte layer are potted substantially entirely in a stacking direction;
a first outermost current collector outside the positive electrode layer that is disposed outermost in the series; and
a second outermost current collector outside the negative electrode layer that is oppositely disposed outermost in the series,wherein each of the first outermost current collector and the second outermost current collector is 2 to 50 times greater in thickness than the current collector,wherein at least a part of the current collector to be associated with the positive electrode layer, the negative electrode layer and the electrolyte layer is potted with the resin portion and a residual portion of the current collector is exposed from the resin portion to form an exposed portion, andwherein the exposed portion of the current collector serves as a voltage detection tab and an output tab.
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Abstract
A bipolar battery includes a bipolar electrode and an electrolyte layer. The bipolar electrode includes a current collector, a positive electrode layer formed on one surface of the current collector, and a negative electrode layer formed on the other surface of the current collector. The bipolar electrode is sequentially laminated to provide connection in series via the electrolyte layer to form a stack structure. The positive electrode layer, the negative electrode layer and the electrolyte layer are potted with a resin portion.
41 Citations
15 Claims
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1. A bipolar battery comprising:
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a bipolar electrode provided with; a current collector; a positive electrode layer formed on one surface of the current collector; and a negative electrode layer formed on the other surface of the current collector; an electrolyte layer permitting the bipolar electrode to be sequentially laminated through the electrolyte layer so as to be connected in series to form a stack structure; a resin portion with which the positive electrode layer, the negative electrode layer and the electrolyte layer are potted substantially entirely in a stacking direction; a first outermost current collector outside the positive electrode layer that is disposed outermost in the series; and a second outermost current collector outside the negative electrode layer that is oppositely disposed outermost in the series, wherein each of the first outermost current collector and the second outermost current collector is 2 to 50 times greater in thickness than the current collector, wherein at least a part of the current collector to be associated with the positive electrode layer, the negative electrode layer and the electrolyte layer is potted with the resin portion and a residual portion of the current collector is exposed from the resin portion to form an exposed portion, and wherein the exposed portion of the current collector serves as a voltage detection tab and an output tab. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A bipolar battery comprising:
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a bipolar electrode provided with; a current collector; a positive electrode layer formed on one surface of the current collector; and a negative electrode layer formed on the other surface of the current collector; an electrolyte layer permitting the bipolar electrode to be sequentially laminated through the electrolyte layer so as to be connected in series to form a stack structure; potting means for potting the positive electrode layer, the negative electrode layer and the electrolyte layer substantially entirely in a stacking direction; a first outermost current collecting means outside the positive electrode layer that is disposed outermost in the series; and a second outermost current collecting means outside the negative electrode layer that is oppositely disposed outermost in the series, wherein each of the first outermost current collecting means and the second outermost current collecting means is 2 to 50 times greater in thickness than the current collector, wherein at least a part of the current collector to be associated with the positive electrode layer, the negative electrode layer and the electrolyte layer is potted with the potting means and a residual portion of the current collector is exposed from the potting means to form an exposed portion, and wherein the exposed portion of the current collector serves as a voltage detection tab and an output tab.
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15. A method of manufacturing a bipolar battery, comprising:
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preparing a bipolar electrode provided with; a current collector; a positive electrode layer formed on one surface of the current collector; and a negative electrode layer formed on the other side surface of the current collector; sequentially laminating the bipolar battery through an electrolyte layer so as to provide connection in series; potting the positive electrode layer, the negative electrode layer and the electrolyte layer substantially entirely in a stacking direction; preparing a first outermost current collector outside the positive electrode layer that is disposed outermost in the series; and preparing a second outermost current collector outside the negative electrode layer that is oppositely disposed outermost in the series, wherein each of the first outermost current collector and the second outermost current collector is 2 to 50 times greater in thickness than the current collector, wherein at least a part of the current collector to be associated with the positive electrode layer, the negative electrode layer and the electrolyte layer is potted with a resin portion and a residual portion of the current collector is exposed from the resin portion to form an exposed portion, and wherein the exposed portion of the current collector serves as a voltage detection tab and an output tab.
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Specification