US 7,320,846 B2 | ||
Bipolar battery and method for manufacturing the same | ||
Kyoichi Watanabe, Yokosuka (Japan); Kenji Hosaka, Yokosuka (Japan); and Kouichi Nemoto, Zushi (Japan) | ||
Assigned to Nissan Motor Co., Ltd., Kanagawa-Ken (Japan) | ||
Filed on Apr. 28, 2004, as Appl. No. 10/833,058. | ||
Claims priority of application No. P2003-168213 (JP), filed on Jun. 12, 2003. | ||
Prior Publication US 2004/0253512 A1, Dec. 16, 2004 | ||
Int. Cl. H01M 10/18 (2006.01); H01M 6/48 (2006.01); H01M 2/08 (2006.01) |
U.S. Cl. 429—210 [429/185; 429/208; 429/231.8; 429/233; 29/623.2; 29/623.3; 29/623.4] | 15 Claims |
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, and
wherein the exposed portion of the current collector serves as a voltage detection tab and an output tab.
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