Provided is a battery including a first positive electrode collector, a first negative electrode collector, a first power generating element, a second power generating element, and a first insulating part. The first and second power generating elements each include a positive electrode active material-containing layer, a negative electrode active material-containing layer, and an inorganic solid electrolyte-containing layer. In each of the first and second power generating elements, the inorganic solid electrolyte layer is in contact with the positive electrode active material-containing layer and the negative electrode active material-containing layer. The positive electrode active material layers of the first and second power generating elements are in contact with the first positive electrode collector. The negative electrode active material layers of the first and second power generating elements are in contact with the first negative electrode collector. The first insulating part is disposed between the first and second power generating elements.
1. A battery comprising:
a first positive electrode collector;
a first negative electrode collector;
a first power generating element;
a second power generating element;
a first insulating part;
a first continuity control layer in which an electrical resistance increases with temperature;
a second continuity control layer in which an electrical resistance increases with temperature;
a second positive electrode collector;
a second negative electrode collector;
a third power generating element;
a fourth power generating element; and
a second insulating part, wherein
the first power generating element and the second power generating element each include a positive electrode active material layer containing a positive electrode active material, a negative electrode active material layer containing a negative electrode active material, and an inorganic solid electrolyte layer containing an inorganic solid electrolyte;
the inorganic solid electrolyte layer in the first power generating element is in contact with the positive electrode active material layer and the negative electrode active material layer in the first power generating element;
the inorganic solid electrolyte layer in the second power generating element is in contact with the positive electrode active material layer and the negative electrode active material layer in the second power generating element;
the positive electrode active material layer of the first power generating element and the positive electrode active material layer of the second power generating element are in indirect contact with the first positive electrode collector;
the negative electrode active material layer of the first power generating element and the negative electrode active material layer of the second power generating element are in contact with the first negative electrode collector;
the first insulating part is disposed between the first power generating element and the second power generating element;
the third power generating element and the fourth power generating element each include a positive electrode active material layer containing a positive electrode active material, a negative electrode active material layer containing a negative electrode active material, and an inorganic solid electrolyte layer containing an inorganic solid electrolyte;
the inorganic solid electrolyte layer in the third power generating element is in contact with the positive electrode active material layer and the negative electrode active material layer in the third power generating element;
the inorganic solid electrolyte layer in the fourth power generating element is in contact with the positive electrode active material layer and the negative electrode active material layer in the fourth power generating element;
the positive electrode active material layer of the third power generating element and the positive electrode active material layer of the fourth power generating element are in contact with the second positive electrode collector;
the negative electrode active material layer of the third power generating element and the negative electrode active material layer of the fourth power generating element are in contact with the second negative electrode collector;
the first negative electrode collector is in direct contact with the second positive electrode collector;
the second insulating part is disposed between the third power generating element and the fourth power generating element,
the first continuity control layer is between the first positive electrode collector and the first power generating element; and
the second continuity control layer is between the first positive electrode collector and the second power generating element.
2. The battery according to claim 1 , wherein
the first insulating part has a width of 1 to 10000 μm.
3. The battery according to claim 1 , wherein
the first insulating part has a Young's modulus of 20 GPa or less.
4. The battery according to claim 1 , wherein
the first continuity control layer and the second continuity control layer are separated by the first insulating part.
5. The battery according to claim 1 , further comprising:
a third continuity control layer in which an electrical resistance increases with temperature; and
a fourth continuity control layer in which an electrical resistance increases with temperature,
wherein the third continuity control layer is between the third power generating element and at least one of the second positive electrode collector and the second negative electrode collector; and
the fourth continuity control layer is between the fourth power generating element and at least one of the second positive electrode collector and the second negative electrode collector.
6. The battery according to claim 5 , wherein
the third continuity control layer and the fourth continuity control layer are separated by the second insulating part.
7. The battery according to claim 5 , further comprising:
a voltage detection terminal, wherein
the voltage detection terminal is in contact with the first negative electrode collector or the second positive electrode collector.
8. The battery according to claim 1 , wherein
the first power generating element and the second power generating element are in direct contact with the first negative electrode collector.