Electrode member and battery block
Collector connected to a terminal of a cell includes: substrate portion made of a conductive plate material; connection portion that is defined by first slit formed in the conductive plate material, and is connected to the terminal of the cell; narrow fuse that is defined by second slits that are formed in the conductive plate material so as to extend from first slit, and whose one end is connected to substrate portion and the other end is connected to connection portion; and insulating film bonded to a region including fuse and second slits defining fuse across substrate portion and connection portion.
1. An electrode member connected to a terminal of a cell, the electrode member comprising:
a substrate portion made of a conductive plate material;
a connection portion defined by a first slit and connected to the terminal of the cell, the first slit being formed in the conductive plate material; and
a fuse defined by a second slit and including one ends connected to the substrate portion and the other end connected to the connection portion, the second slit being formed in the conductive plate material so as to extend from the first slit, wherein:
the connection portion has a tip and a base end, and the connection portion is vertically bent between the tip and the base, and
the fuse is not vertically bent toward the substrate portion.
2. The electrode member according to claim 1 , wherein
the connection portion includes a cut-away portion for exposing an electrode surface of the cell.
3. A battery block formed by interconnecting a plurality of cells in parallel, the battery block comprising:
the plurality of cells;
a positive-side collection portion for interconnecting a plurality of positive terminals to collect power; and
a negative-side collection portion for interconnecting a plurality of negative terminals to collect power,
wherein the positive-side collection portion or the negative-side collection portion includes a collector integrally formed of the plurality of electrode members according to claim 1 , and each of the plurality of electrode members corresponds to each of the plurality of cells.
4. The electrode member according to claim 1 , further comprising an insulating film bonded to a region across the substrate portion and the connection portion, the region including the fuse and the second slit defining the fuse.
5. The electrode member according to claim 4 , wherein
an overhang for increasing a bonding area to the insulating film is formed at an edge of at least one of the substrate portion and the connection portion, the at least one facing the second slit.
6. The electrode member according to claim 5 , wherein the connection portion includes a cut-away portion for exposing an electrode surface of the cell.
7. The electrode member according to claim 5 , wherein the fuse includes:
a first fuse portion extending from the substrate portion toward the connection portion;
a second fuse portion extending from the connection portion toward the substrate portion; and
a third fuse portion disposed between an end of the first fuse portion and an end of the second fuse portion so as to be connected to the ends, and
the overhang includes:
a first projection projecting from the substrate portion closely to and substantially in parallel with the first fuse portion; and
a second projection projecting from the connection portion closely to and substantially in parallel with the second fuse portion.
8. The electrode member according to claim 7 , wherein the connection portion includes a cut-away portion for exposing an electrode surface of the cell.
9. The electrode member according to claim 4 , wherein
the insulating film includes a thermosetting resin layer, which comes into contact with the fuse.