Battery system with excellent controllability for temperature
A battery system of the present invention includes one or more cell groups, each having a positive electrode, a negative electrode and a solid electrolyte layer, and one or more heat mediating structures adjacent to the cell groups. The cell groups and the heat mediating structures are alternately stacked. A solid electrolyte is applied to the electrolyte layer. The respective cell groups have a thin plate shape, and adjacent thereto, the heat mediating structures are provided.
1. A battery system, comprising:
one or more cell groups, each including a positive electrode, a negative electrode and a solid electrolyte layer; and
one or more heat mediating structures adjacent the cell groups, each of the heat mediating structures including a fluid path configured to conduct a fluid heat medium and a wave-like wall having angular tops and angular bottoms;
wherein the cell groups and the heat mediating structures are alternately stacked, and
wherein the heat mediating structures connect with external heating means.
2. The battery system according to claim 1 , wherein:
each of the fluid paths being composed of any of metals and conductors.
3. The battery system according to claim 1 , wherein:
each of the fluid paths being composed of an electrically insulating material.
4. The battery system according to claim 1 , wherein:
each of the heat mediating structures is composed of a solid material having heat conductivity.
5. The battery system according to claim 1 , wherein:
each of the heat mediating structures is composed of one or more materials selected from the group consisting of metals, silicon carbide and silicon nitride; and
an interface of the heat mediating structure to the cell group includes an insulating layer.
6. The battery system according to claim 1 , wherein:
the solid electrolyte layer is composed of any of polymer ion-conducting materials and inorganic ion-conducting materials.
7. The battery system according to claim 1 , wherein:
a positive charge carrier in the solid electrolyte layer is lithium ions.
8. The battery system according to claim 1 , wherein:
the positive electrode is composed of any one or more of lithium cobaltate, lithium nickelate and lithium manganate.
9. The battery system according to claim 1 , wherein:
the negative electrode is composed of any one or more of graphite, hard carbon and lithium titanate.
10. The battery system according to claim 1 , wherein the heat mediating structures are configured to circulate the fluid heat medium between the external heating means.
11. The battery system according to claim 1 , wherein each of the cell groups comprises a plurality of cells, the cells being spaced and connected in parallel via the heat mediating structures.
12. The battery system according to claim 11 , wherein the cell groups are buried in a resin.