Solid-state battery
A packaged solid-state battery that includes a solid-state battery having a top surface, a bottom surface, and side surfaces connecting the top surface to the bottom surface; a supporting substrate supporting the bottom surface of the solid-state battery; an insulating cover layer covering at least the top surface and the side surfaces of the solid-state battery; and an inorganic cover film on the insulating cover layer.
1. A packaged solid-state battery, comprising:
a solid-state battery having a top surface, a bottom surface, and side surfaces connecting the top surface to the bottom surface;
a supporting substrate supporting the bottom surface of the solid-state battery;
an insulating cover layer covering the top surface and the side surfaces of the solid-state battery; and
an inorganic cover film on the insulating cover layer,
wherein the supporting substrate includes wiring electrically connecting an upper surface and a lower surface of the supporting substrate forms a terminal substrate having an external terminal electrically connected to the solid-state battery.
2. The packaged solid-state battery according to claim 1 , wherein the inorganic cover film is a water-vapor barrier film.
3. The packaged solid-state battery according to claim 2 , wherein the supporting substrate is a water-vapor barrier substrate.
4. The packaged solid-state battery according to claim 1 , wherein the inorganic cover film and/or the supporting substrate has a water-vapor transmission rate of less than 1.0×10 −3 g/(m 2 ·Day).
5. The packaged solid-state battery according to claim 1 , wherein the wiring of the supporting substrate and an end surface electrode of the solid-state battery are electrically connected to each other.
6. The packaged solid-state battery according to claim 5 , further comprising a conductive connection portion on the supporting substrate that electrically connects the wiring of the supporting substrate and the end surface electrode to each other.
7. The packaged solid-state battery according to claim 6 , wherein the insulating cover layer is disposed in a gap between the solid-state battery and the supporting substrate.
8. A packaged solid-state battery, comprising:
a solid-state battery having a top surface, a bottom surface, and side surfaces connecting the top surface to the bottom surface;
a supporting substrate supporting the bottom surface of the solid-state battery;
an insulating cover layer covering the top surface and the side surfaces of the solid-state battery; and
an inorganic cover film on the insulating cover layer,
wherein the inorganic cover film is a dry plating film.
9. The packaged solid-state battery according to claim 1 , wherein the insulating cover layer contains a resin material.
10. The packaged solid-state battery according to claim 1 , wherein the insulating cover layer contains a filler.
11. The packaged solid-state battery according to claim 10 , wherein the filler is a water-vapor transmission prevention filler.
12. The packaged solid-state battery according to claim 1 , wherein the supporting substrate contains a ceramic.
13. The packaged solid-state battery according to claim 1 , wherein the inorganic cover film is a sputtered film.
14. The packaged solid-state battery according to claim 1 , wherein the supporting substrate is a multilayer wiring board including an inner via hole.
15. The packaged solid-state battery according to claim 1 , wherein the supporting substrate includes a non-connected metal layer having no electrical connection.
16. The packaged solid-state battery according to claim 15 , wherein the non-connected metal layer is a water-vapor transmission prevention layer.
17. The packaged solid-state battery according to claim 1 , wherein the inorganic cover film extends onto a side surface of the supporting substrate in a sectional view of the packaged solid-state battery.
18. The packaged solid-state battery according to claim 1 , wherein the supporting substrate is even with the inorganic cover film on a bottom-side surface of the packaged solid-state battery.
19. The packaged solid-state battery according to claim 1 , wherein the solid-state battery is a sintered body.
20. The packaged solid-state battery according to claim 1 , wherein a positive electrode layer and a negative electrode layer of the solid-state battery are layers configured to store and release lithium ions.