Negative-electrode terminal for cell
First Claim
1. A negative-electrode terminal for a cell comprising a clad portion formed by bonding a first metal layer made of Al or an Al alloy and a second metal layer containing Ni and Cu and consisting of one or a plurality of layers to each other, whereinthe first metal layer includes a connected region connected with a cell terminal connecting plate for connecting cell terminals of a plurality of cells with each other and a stacked region adjacent to the connected region on the side of the same surfacethe second metal layer is bonded to the first metal layer in the stacked region, and configured to be connectable to cell negative electrodes of the cells, andthe second metal layer is stacked on the first metal layer in the stacked region which is separate from the connected region, in a direction in which the cell negative electrodes extend.
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Accused Products
Abstract
A negative-electrode terminal for a cell in which separation between a first metal layer and a second metal layer hardly takes place is provided by suppressing excess formation of an intermetallic compound on a bond interface between the first metal layer and the second metal layer. This negative-electrode terminal for a cell includes a clad portion formed by bonding a first metal layer made of Al or an Al alloy and a second metal layer containing Ni and Cu and consisting of one or a plurality of layers to each other. The first metal layer includes a connected region connected with a cell terminal connecting plate and a stacked region adjacent to the connected region on the side of the same surface, while the second metal layer is bonded to the first metal layer in the stacked region and configured to be connectable to cell negative electrodes of cells.
7 Citations
20 Claims
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1. A negative-electrode terminal for a cell comprising a clad portion formed by bonding a first metal layer made of Al or an Al alloy and a second metal layer containing Ni and Cu and consisting of one or a plurality of layers to each other, wherein
the first metal layer includes a connected region connected with a cell terminal connecting plate for connecting cell terminals of a plurality of cells with each other and a stacked region adjacent to the connected region on the side of the same surface the second metal layer is bonded to the first metal layer in the stacked region, and configured to be connectable to cell negative electrodes of the cells, and the second metal layer is stacked on the first metal layer in the stacked region which is separate from the connected region, in a direction in which the cell negative electrodes extend.
Specification