Battery
A main object of the present disclosure is to provide a battery with excellent bonding of tabs and current collecting terminals. The present disclosure achieves the object by providing a battery including a plurality of a power generating element, wherein: the power generating element includes a first active material layer, a second active material layer, an electrolyte layer arranged between the first active material layer and the second active material layer, a first current collector that collects currents of the first active material layer, and a second current collector that collects currents of the second active material layer; the first current collector includes a first tab including at least a root part; a plurality of the first tab is arranged to overlap with each other in a thickness direction of the power generating element; the battery includes a first current collecting terminal electronically connected to the plurality of the first tab; and in the plurality of the power generating element, a resin layer that reinforces the root part is arranged between the first tab neighboring.
1. A battery comprising a plurality of a power generating element, wherein:
the power generating element includes a first active material layer, a second active material layer, an electrolyte layer arranged between the first active material layer and the second active material layer, a first current collector that collects currents of the first active material layer, and a second current collector that collects currents of the second active material layer;
the first current collector includes a first tab including at least a root part;
a plurality of the first tab is arranged to overlap with each other in a thickness direction of the power generating element;
the battery includes a first current collecting terminal electronically connected to the plurality of the first tab; and
in the plurality of the power generating element, a resin layer that reinforces the root part is arranged between the first tab neighboring.
2. The battery according to claim 1 , wherein the first tab includes a curved part that is arranged in a tip of the root part, and extends to a direction crossing a direction to which the root part extends.
3. The battery according to claim 2 , wherein an angle formed by the direction to which the curved part extends and the thickness direction of the power generating element is 0° or more and 30° or less.
4. The battery according to claim 1 , wherein, when H T designates a height of the first tab and H R designates a height of the resin layer, the H T and the H R satisfy 0.5≤H R /H T ≤1.
5. The battery according to claim 4 , wherein the H T and the H R satisfy 0.5≤H R /H T ≤0.95.
6. The battery according to claim 1 , wherein, when W T designates a width of the first tab and W R designates a width of the resin layer, the W T and the W R satisfy 0.5≤W R /W T .
7. The battery according to claim 1 , wherein, when L C designates a center line of the first tab in a width direction, the resin layer is present so as to overlap the L C .
8. The battery according to claim 1 , wherein the resin layer contains at least one of a thermoplastic resin and a curable resin.
9. The battery according to claim 1 , wherein the resin layer contains an elastomer resin.